diff --git a/core/main_terminal_parts/tools_definition.py b/core/main_terminal_parts/tools_definition.py
index ddb504a..b5de149 100644
--- a/core/main_terminal_parts/tools_definition.py
+++ b/core/main_terminal_parts/tools_definition.py
@@ -700,7 +700,7 @@ class MainTerminalToolsDefinitionMixin:
                                     },
                                     "deliverables_dir": {
                                         "type": "string",
-                                        "description": "交付文件夹的相对路径（相对于项目根目录）。子智能体会将所有结果文件放在此目录。\n\n留空则使用默认路径：sub_agent_results/agent_{agent_id}\n\n示例：'docs/api'、'reports/performance'、'tests/generated'"
+                                        "description": "交付文件夹的相对路径（相对于项目根目录）。子智能体会将所有结果文件放在此目录。\n\n要求：必须是不存在的新目录；若目录不存在会自动创建；若目录已存在（无论是否为空）将报错。\n\n留空则使用默认路径：sub_agent_results/agent_{agent_id}\n\n示例：'docs/api'、'reports/performance'、'tests/generated'"
                                     },
                                     "run_in_background": {
                                         "type": "boolean",
@@ -709,9 +709,14 @@ class MainTerminalToolsDefinitionMixin:
                                     "timeout_seconds": {
                                         "type": "integer",
                                         "description": "超时时间（秒），范围 60-3600。超时后子智能体会被强制终止，已生成的部分结果会保留。默认 600 秒（10分钟）。"
+                                    },
+                                    "thinking_mode": {
+                                        "type": "string",
+                                        "enum": ["fast", "thinking"],
+                                        "description": "子智能体思考模式，根据任务复杂度选择：\n\nfast（快速模式）- 适合简单明确的任务：\n- 网络信息搜集和整理\n- 批量文件读取和简单处理\n- 执行已知的命令序列\n- 生成简单的文档或报告\n- 数据格式转换\n\nthinking（思考模式）- 适合复杂任务：\n- 代码架构分析和重构设计\n- 复杂算法实现和优化\n- 多步骤问题诊断和调试\n- 技术方案选型和对比\n- 需要深度推理的代码审查\n\n不填则使用默认模式。"
                                     }
                                 }),
-                                "required": ["agent_id", "summary", "task", "deliverables_dir"]
+                                "required": ["agent_id", "summary", "task", "deliverables_dir", "thinking_mode"]
                             }
                         }
                     },
diff --git a/core/main_terminal_parts/tools_execution.py b/core/main_terminal_parts/tools_execution.py
index 59f3d65..bf74dde 100644
--- a/core/main_terminal_parts/tools_execution.py
+++ b/core/main_terminal_parts/tools_execution.py
@@ -628,6 +628,7 @@ class MainTerminalToolsExecutionMixin:
                             deliverables_dir=arguments.get("deliverables_dir", ""),
                             run_in_background=arguments.get("run_in_background", False),
                             timeout_seconds=arguments.get("timeout_seconds"),
+                            thinking_mode=arguments.get("thinking_mode"),
                             conversation_id=self.context_manager.current_conversation_id
                         )
 
diff --git a/easyagent/models.json b/easyagent/models.json
index 1afd5c7..a26599c 100644
--- a/easyagent/models.json
+++ b/easyagent/models.json
@@ -3,9 +3,9 @@
   "default_model": "kimi-k2.5",
   "models": [
     {
-      "url": "https://api.moonshot.cn/v1",
+      "url": "https://coding.dashscope.aliyuncs.com/v1",
       "name": "kimi-k2.5",
-      "apikey": "sk-xW0xjfQM6Mp9ZCWMLlnHiRJcpEOIZPTkXcN0dQ15xpZSuw2y",
+      "apikey": "sk-sp-0967ae3d7be84839b4c532d1ce72d6f6",
       "modes": "快速,思考",
       "multimodal": "图片,视频",
       "max_output": 32000,
diff --git a/easyagent/src/batch/index.js b/easyagent/src/batch/index.js
index a14a603..49ad4c2 100644
--- a/easyagent/src/batch/index.js
+++ b/easyagent/src/batch/index.js
@@ -24,6 +24,7 @@ function parseArgs() {
     statsFile: null,
     agentId: null,
     modelKey: null,
+    thinkingMode: null,
     timeout: 600,
   };
 
@@ -43,6 +44,8 @@ function parseArgs() {
       config.agentId = args[++i];
     } else if (arg === '--model-key' && i + 1 < args.length) {
       config.modelKey = args[++i];
+    } else if (arg === '--thinking-mode' && i + 1 < args.length) {
+      config.thinkingMode = String(args[++i] || '').trim().toLowerCase();
     } else if (arg === '--timeout' && i + 1 < args.length) {
       config.timeout = parseInt(args[++i], 10);
     }
@@ -155,9 +158,11 @@ async function main() {
     runtime_start: Date.now(),
     runtime_seconds: 0,
     files_read: 0,
+    edit_files: 0,
     searches: 0,
     web_pages: 0,
     commands: 0,
+    api_calls: 0,
     token_usage: { prompt: 0, completion: 0, total: 0 },
   };
 
@@ -169,6 +174,8 @@ async function main() {
   try {
     while (true) {
       turnCount++;
+      stats.api_calls += 1;
+      stats.turn_count = turnCount;
 
       // 检查超时
       const elapsed = Date.now() - startTime;
@@ -210,6 +217,7 @@ async function main() {
 
       // 调用 API
       let assistantMessage = { role: 'assistant', content: '', tool_calls: [] };
+      let reasoningBuffer = '';
       let currentToolCall = null;
       let usage = null;
 
@@ -219,11 +227,12 @@ async function main() {
           modelKey,
           messages,
           tools,
-          thinkingMode: false,
+          thinkingMode: config.thinkingMode === 'thinking',
           currentContextTokens: 0,
           abortSignal: null,
         })) {
-          const delta = chunk.choices?.[0]?.delta;
+          const choice = chunk.choices?.[0];
+          const delta = choice?.delta;
           if (!delta) continue;
 
           // 处理内容
@@ -231,6 +240,31 @@ async function main() {
             assistantMessage.content += delta.content;
           }
 
+          // 处理 reasoning_content（兼容 reasoning_details）
+          if (delta.reasoning_content || delta.reasoning_details || choice?.reasoning_details) {
+            let rc = '';
+            if (delta.reasoning_content) {
+              rc = delta.reasoning_content;
+            } else if (delta.reasoning_details) {
+              if (Array.isArray(delta.reasoning_details)) {
+                rc = delta.reasoning_details.map((d) => d.text || '').join('');
+              } else if (typeof delta.reasoning_details === 'string') {
+                rc = delta.reasoning_details;
+              } else if (delta.reasoning_details && typeof delta.reasoning_details.text === 'string') {
+                rc = delta.reasoning_details.text;
+              }
+            } else if (choice?.reasoning_details) {
+              if (Array.isArray(choice.reasoning_details)) {
+                rc = choice.reasoning_details.map((d) => d.text || '').join('');
+              } else if (typeof choice.reasoning_details === 'string') {
+                rc = choice.reasoning_details;
+              } else if (choice.reasoning_details && typeof choice.reasoning_details.text === 'string') {
+                rc = choice.reasoning_details.text;
+              }
+            }
+            if (rc) reasoningBuffer += rc;
+          }
+
           // 处理工具调用
           if (delta.tool_calls) {
             for (const tc of delta.tool_calls) {
@@ -276,8 +310,16 @@ async function main() {
         applyUsage(stats.token_usage, usage);
       }
 
-      // 添加助手消息到历史
-      messages.push(assistantMessage);
+      // 添加助手消息到历史（reasoning_content 放在 content 前）
+      const finalAssistantMessage = reasoningBuffer
+        ? {
+            role: 'assistant',
+            reasoning_content: reasoningBuffer,
+            content: assistantMessage.content,
+            tool_calls: assistantMessage.tool_calls,
+          }
+        : assistantMessage;
+      messages.push(finalAssistantMessage);
 
       // 如果没有工具调用，检查是否忘记调用 finish_task
       if (!assistantMessage.tool_calls || assistantMessage.tool_calls.length === 0) {
@@ -292,6 +334,7 @@ async function main() {
       // 执行工具调用
       for (const toolCall of assistantMessage.tool_calls) {
         const toolName = toolCall.function.name;
+        stats.tool_calls = (stats.tool_calls || 0) + 1;
 
         // 检查是否是 finish_task
         if (toolName === 'finish_task') {
@@ -372,6 +415,7 @@ async function main() {
 
         // 更新统计
         if (toolName === 'read_file') stats.files_read++;
+        else if (toolName === 'edit_file') stats.edit_files++;
         else if (toolName === 'search_workspace') stats.searches++;
         else if (toolName === 'web_search' || toolName === 'extract_webpage') stats.web_pages++;
         else if (toolName === 'run_command') stats.commands++;
diff --git a/easyagent/src/model/model_profiles.js b/easyagent/src/model/model_profiles.js
index f37c452..adc58a4 100644
--- a/easyagent/src/model/model_profiles.js
+++ b/easyagent/src/model/model_profiles.js
@@ -17,8 +17,8 @@ function buildProfile(model) {
     supports_thinking: supportsThinking,
     thinking_params: supportsThinking
       ? {
-          fast: { thinking: { type: 'disabled' } },
-          thinking: { thinking: { type: 'enabled' } },
+        fast: { thinking: { type: 'disabled' }, enable_thinking: false },
+        thinking: { thinking: { type: 'enabled' }, enable_thinking: true },
         }
       : { fast: {}, thinking: {} },
   };
diff --git a/modules/sub_agent_manager.py b/modules/sub_agent_manager.py
index 13546b9..c31c762 100644
--- a/modules/sub_agent_manager.py
+++ b/modules/sub_agent_manager.py
@@ -62,12 +62,18 @@ class SubAgentManager:
         conversation_id: Optional[str] = None,
         run_in_background: bool = False,
         model_key: Optional[str] = None,
+        thinking_mode: Optional[str] = None,
     ) -> Dict:
         """创建子智能体任务并启动子进程。"""
         validation_error = self._validate_create_params(agent_id, summary, task, deliverables_dir)
         if validation_error:
             return {"success": False, "error": validation_error}
 
+        if not thinking_mode:
+            return {"success": False, "error": "缺少 thinking_mode 参数，必须指定 fast 或 thinking"}
+        if thinking_mode not in {"fast", "thinking"}:
+            return {"success": False, "error": "thinking_mode 仅支持 fast 或 thinking"}
+
         if not conversation_id:
             return {"success": False, "error": "缺少对话ID，无法创建子智能体"}
 
@@ -126,6 +132,8 @@ class SubAgentManager:
         ]
         if model_key:
             cmd.extend(["--model-key", model_key])
+        if thinking_mode:
+            cmd.extend(["--thinking-mode", thinking_mode])
 
         try:
             process = subprocess.Popen(
@@ -147,6 +155,7 @@ class SubAgentManager:
             "deliverables_dir": str(deliverables_path),
             "subagent_dir": str(subagent_dir),
             "timeout_seconds": timeout_seconds,
+            "thinking_mode": thinking_mode,
             "created_at": time.time(),
             "conversation_id": conversation_id,
             "run_in_background": run_in_background,
@@ -231,6 +240,8 @@ class SubAgentManager:
                 return {"success": False, "error": f"终止进程失败: {exc}"}
 
         task["status"] = "terminated"
+        task["updated_at"] = time.time()
+        task["notified"] = True
         task["final_result"] = {
             "success": False,
             "status": "terminated",
@@ -300,6 +311,7 @@ class SubAgentManager:
         success = output.get("success", False)
         summary = output.get("summary", "")
         stats = output.get("stats", {})
+        stats_summary = self._build_stats_summary(stats)
 
         if output.get("timeout"):
             status = "timeout"
@@ -320,11 +332,24 @@ class SubAgentManager:
         deliverables_dir = task.get("deliverables_dir")
 
         if status == "completed":
-            system_message = f"✅ 子智能体{agent_id} 任务摘要：{task_summary} 已完成。\n\n{summary}\n\n交付目录：{deliverables_dir}"
+            system_message = self._compose_sub_agent_message(
+                prefix=f"✅ 子智能体{agent_id} 任务摘要：{task_summary} 已完成。",
+                stats_summary=stats_summary,
+                summary=summary,
+                deliverables_dir=deliverables_dir,
+            )
         elif status == "timeout":
-            system_message = f"⏱️ 子智能体{agent_id} 任务摘要：{task_summary} 超时未完成。\n\n{summary}"
+            system_message = self._compose_sub_agent_message(
+                prefix=f"⏱️ 子智能体{agent_id} 任务摘要：{task_summary} 超时未完成。",
+                stats_summary=stats_summary,
+                summary=summary,
+            )
         else:
-            system_message = f"❌ 子智能体{agent_id} 任务摘要：{task_summary} 执行失败。\n\n{summary}"
+            system_message = self._compose_sub_agent_message(
+                prefix=f"❌ 子智能体{agent_id} 任务摘要：{task_summary} 执行失败。",
+                stats_summary=stats_summary,
+                summary=summary,
+            )
 
         result = {
             "success": success,
@@ -334,6 +359,7 @@ class SubAgentManager:
             "message": summary,
             "deliverables_dir": deliverables_dir,
             "stats": stats,
+            "stats_summary": stats_summary,
             "system_message": system_message,
         }
         task["final_result"] = result
@@ -359,13 +385,29 @@ class SubAgentManager:
         task["status"] = "timeout"
         task["updated_at"] = time.time()
 
+        stats = {}
+        stats_file = Path(task.get("stats_file", ""))
+        if stats_file.exists():
+            try:
+                stats = json.loads(stats_file.read_text(encoding="utf-8"))
+            except Exception:
+                stats = {}
+        stats_summary = self._build_stats_summary(stats)
+        system_message = self._compose_sub_agent_message(
+            prefix=f"⏱️ 子智能体{task.get('agent_id')} 任务摘要：{task.get('summary')} 超时未完成。",
+            stats_summary=stats_summary,
+            summary="等待超时，子智能体已被终止。",
+        )
+
         result = {
             "success": False,
             "status": "timeout",
             "task_id": task_id,
             "agent_id": task.get("agent_id"),
             "message": "等待超时，子智能体已被终止。",
-            "system_message": f"⏱️ 子智能体{task.get('agent_id')} 任务摘要：{task.get('summary')} 超时未完成。",
+            "stats": stats,
+            "stats_summary": stats_summary,
+            "system_message": system_message,
         }
         task["final_result"] = result
         self._save_state()
@@ -466,6 +508,7 @@ class SubAgentManager:
 
 # 注意事项
 
+1. **结果传达**：你在运行期间产生的记录与输出不会被直接传递给主智能体。务必把所有需要传达的信息写进 `finish_task` 工具的 `summary` 字段，以及交付目录中的落盘文件里。
 1. **不要无限循环**：如果任务无法完成，说明原因并提交报告
 2. **不要超出范围**：只操作任务描述中指定的文件/目录
 3. **不要等待输入**：你是自主运行的，不会收到用户的进一步指令
@@ -489,6 +532,8 @@ class SubAgentManager:
         if not str(deliverables_path).startswith(str(self.project_path)):
             raise ValueError("交付目录必须位于项目目录内")
 
+        if deliverables_path.exists():
+            raise ValueError("交付目录必须为不存在的新目录")
         deliverables_path.mkdir(parents=True, exist_ok=True)
         return deliverables_path
     def _load_state(self):
@@ -666,6 +711,7 @@ class SubAgentManager:
                     stats = json.loads(stats_file.read_text(encoding="utf-8"))
                 except Exception:
                     pass
+            stats_summary = self._build_stats_summary(stats)
 
             results.append({
                 "agent_id": agent_id,
@@ -677,6 +723,7 @@ class SubAgentManager:
                 "updated_at": task.get("updated_at"),
                 "deliverables_dir": task.get("deliverables_dir"),
                 "stats": stats,
+                "stats_summary": stats_summary,
                 "final_result": task.get("final_result"),
             })
 
@@ -859,9 +906,57 @@ class SubAgentManager:
 
         return f"{prefix} 状态：{status}。" + (extra if extra else "")
 
+    @staticmethod
+    def _coerce_stat_int(value: Any) -> int:
+        try:
+            return max(0, int(value))
+        except (TypeError, ValueError):
+            return 0
+
+    def _build_stats_summary(self, stats: Optional[Dict[str, Any]]) -> str:
+        if not isinstance(stats, dict):
+            stats = {}
+        api_calls = self._coerce_stat_int(
+            stats.get("api_calls")
+            or stats.get("api_call_count")
+            or stats.get("turn_count")
+        )
+        files_read = self._coerce_stat_int(stats.get("files_read"))
+        edit_files = self._coerce_stat_int(stats.get("edit_files"))
+        searches = self._coerce_stat_int(stats.get("searches"))
+        web_pages = self._coerce_stat_int(stats.get("web_pages"))
+        commands = self._coerce_stat_int(stats.get("commands"))
+        lines = [
+            f"调用了{api_calls}次",
+            f"阅读了{files_read}次文件",
+            f"编辑了{edit_files}次文件",
+            f"搜索了{searches}次内容",
+            f"查看了{web_pages}个网页",
+            f"运行了{commands}个指令",
+        ]
+        return "\n".join(lines)
+
+    def _compose_sub_agent_message(
+        self,
+        *,
+        prefix: str,
+        stats_summary: str,
+        summary: str,
+        deliverables_dir: Optional[str] = None,
+    ) -> str:
+        parts = [prefix]
+        if stats_summary:
+            parts.append(stats_summary)
+        if summary:
+            parts.append(summary)
+        if deliverables_dir:
+            parts.append(f"交付目录：{deliverables_dir}")
+        return "\n\n".join(parts)
+
     def get_overview(self, conversation_id: Optional[str] = None) -> List[Dict[str, Any]]:
         """返回子智能体任务概览，用于前端展示。"""
         overview: List[Dict[str, Any]] = []
+        state_changed = False
         for task_id, task in self.tasks.items():
             if conversation_id and task.get("conversation_id") != conversation_id:
                 continue
@@ -894,6 +989,16 @@ class SubAgentManager:
                         if status_result.get("status") in TERMINAL_STATUSES:
                             task["status"] = status_result["status"]
                             task["final_result"] = status_result
+                            state_changed = True
+                else:
+                    # 进程句柄丢失（重启后常见），尝试直接检查输出文件
+                    logger.debug("[SubAgentManager] 进程句柄缺失，尝试读取输出文件: %s", task_id)
+                    status_result = self._check_task_status(task)
+                    snapshot["status"] = status_result.get("status", snapshot["status"])
+                    if status_result.get("status") in TERMINAL_STATUSES:
+                        task["status"] = status_result["status"]
+                        task["final_result"] = status_result
+                        state_changed = True
 
             if snapshot["status"] in TERMINAL_STATUSES or snapshot["status"] == "terminated":
                 # 已结束的任务带上最终结果/系统消息，方便前端展示
@@ -904,4 +1009,6 @@ class SubAgentManager:
             overview.append(snapshot)
 
         overview.sort(key=lambda item: item.get("created_at") or 0, reverse=True)
+        if state_changed:
+            self._save_state()
         return overview
diff --git a/server/chat_flow_task_main.py b/server/chat_flow_task_main.py
index 1888378..ab25f8b 100644
--- a/server/chat_flow_task_main.py
+++ b/server/chat_flow_task_main.py
@@ -42,6 +42,7 @@ from modules.personalization_manager import (
 from modules.upload_security import UploadSecurityError
 from modules.user_manager import UserWorkspace
 from modules.usage_tracker import QUOTA_DEFAULTS
+from modules.sub_agent_manager import TERMINAL_STATUSES
 from core.web_terminal import WebTerminal
 from utils.tool_result_formatter import format_tool_result_for_context
 from utils.conversation_manager import ConversationManager
@@ -137,6 +138,8 @@ async def poll_sub_agent_completion(*, web_terminal, workspace, conversation_id,
     if not manager:
         debug_log("[SubAgent] poll_sub_agent_completion: manager 不存在")
         return
+    if not hasattr(web_terminal, "_announced_sub_agent_tasks"):
+        web_terminal._announced_sub_agent_tasks = set()
 
     max_wait_time = 3600  # 最多等待1小时
     start_wait = time.time()
@@ -152,7 +155,6 @@ async def poll_sub_agent_completion(*, web_terminal, workspace, conversation_id,
             debug_log(f"[SubAgent] 发送事件失败: {event_type}, 错误: {e}")
 
     while (time.time() - start_wait) < max_wait_time:
-        await asyncio.sleep(5)
         debug_log(f"[SubAgent] 轮询检查...")
 
         # 检查停止标志
@@ -172,6 +174,18 @@ async def poll_sub_agent_completion(*, web_terminal, workspace, conversation_id,
             result_summary = update.get("result_summary") or update.get("message", "")
             deliverables_dir = update.get("deliverables_dir", "")
             status = update.get("status")
+            task_id = update.get("task_id")
+            task_info = manager.tasks.get(task_id) if task_id else None
+            task_conv_id = task_info.get("conversation_id") if isinstance(task_info, dict) else None
+            if task_conv_id and task_conv_id != conversation_id:
+                debug_log(f"[SubAgent] 跳过非当前对话任务: task={task_id} conv={task_conv_id} current={conversation_id}")
+                continue
+            if task_id and task_info is None:
+                debug_log(f"[SubAgent] 找不到任务详情，跳过: task={task_id}")
+                continue
+            if status == "terminated" or (isinstance(task_info, dict) and task_info.get("notified")):
+                debug_log(f"[SubAgent] 跳过已终止/已通知任务: task={task_id} status={status}")
+                continue
 
             debug_log(f"[SubAgent] 子智能体{agent_id}完成，状态: {status}")
 
@@ -186,36 +200,62 @@ async def poll_sub_agent_completion(*, web_terminal, workspace, conversation_id,
             debug_log(f"[SubAgent] 消息内容: {user_message[:100]}...")
 
             try:
+                if task_id:
+                    web_terminal._announced_sub_agent_tasks.add(task_id)
+                    if isinstance(task_info, dict):
+                        task_info["notified"] = True
+                        task_info["updated_at"] = time.time()
+                        try:
+                            manager._save_state()
+                        except Exception as exc:
+                            debug_log(f"[SubAgent] 保存通知状态失败: {exc}")
                 sender('user_message', {
                     'message': user_message,
                     'conversation_id': conversation_id
                 })
-                # 直接在当前事件循环中处理，避免嵌套事件循环
-                entry = get_stop_flag(client_sid, username)
-                if not isinstance(entry, dict):
-                    entry = {'stop': False, 'task': None, 'terminal': None}
-                entry['stop'] = False
-                task = asyncio.create_task(handle_task_with_sender(
-                    terminal=web_terminal,
-                    workspace=workspace,
-                    message=user_message,
-                    images=[],
-                    sender=sender,
-                    client_sid=client_sid,
-                    username=username,
-                    videos=[]
-                ))
-                entry['task'] = task
-                entry['terminal'] = web_terminal
-                set_stop_flag(client_sid, username, entry)
-                await task
-                debug_log(f"[SubAgent] process_message_task 调用成功")
+                # 注册为后台任务，确保刷新后可恢复轮询
+                from .tasks import task_manager
+                workspace_id = getattr(workspace, "workspace_id", None) or "default"
+                session_data = {
+                    "username": username,
+                    "role": getattr(web_terminal, "user_role", "user"),
+                    "is_api_user": getattr(web_terminal, "user_role", "") == "api",
+                    "workspace_id": workspace_id,
+                    "run_mode": getattr(web_terminal, "run_mode", None),
+                    "thinking_mode": getattr(web_terminal, "thinking_mode", None),
+                    "model_key": getattr(web_terminal, "model_key", None),
+                }
+                rec = task_manager.create_chat_task(
+                    username,
+                    workspace_id,
+                    user_message,
+                    [],
+                    conversation_id,
+                    model_key=session_data.get("model_key"),
+                    thinking_mode=session_data.get("thinking_mode"),
+                    run_mode=session_data.get("run_mode"),
+                    session_data=session_data,
+                )
+                debug_log(f"[SubAgent] 已创建后台任务: task_id={rec.task_id}")
             except Exception as e:
-                debug_log(f"[SubAgent] process_message_task 失败: {e}")
-                import traceback
-                debug_log(f"[SubAgent] 错误堆栈: {traceback.format_exc()}")
-            finally:
-                clear_stop_flag(client_sid, username)
+                debug_log(f"[SubAgent] 创建后台任务失败，回退直接执行: {e}")
+                try:
+                    task = asyncio.create_task(handle_task_with_sender(
+                        terminal=web_terminal,
+                        workspace=workspace,
+                        message=user_message,
+                        images=[],
+                        sender=sender,
+                        client_sid=client_sid,
+                        username=username,
+                        videos=[]
+                    ))
+                    await task
+                    debug_log(f"[SubAgent] process_message_task 调用成功")
+                except Exception as inner_exc:
+                    debug_log(f"[SubAgent] process_message_task 失败: {inner_exc}")
+                    import traceback
+                    debug_log(f"[SubAgent] 错误堆栈: {traceback.format_exc()}")
 
             return  # 只处理第一个完成的子智能体
 
@@ -234,9 +274,10 @@ async def poll_sub_agent_completion(*, web_terminal, workspace, conversation_id,
             # 若状态已提前被更新为终态（poll_updates 返回空），补发完成提示
             completed_tasks = [
                 task for task in manager.tasks.values()
-                if task.get("status") in {"completed", "failed", "timeout", "terminated"}
+                if task.get("status") in {"completed", "failed", "timeout"}
                 and task.get("run_in_background")
                 and task.get("conversation_id") == conversation_id
+                and not task.get("notified")
             ]
             if completed_tasks:
                 completed_tasks.sort(
@@ -264,36 +305,65 @@ async def poll_sub_agent_completion(*, web_terminal, workspace, conversation_id,
 交付目录：{deliverables_dir}"""
 
                 try:
+                    task_id = task.get("task_id")
+                    if task_id:
+                        web_terminal._announced_sub_agent_tasks.add(task_id)
+                        if isinstance(task, dict):
+                            task["notified"] = True
+                            task["updated_at"] = time.time()
+                            try:
+                                manager._save_state()
+                            except Exception as exc:
+                                debug_log(f"[SubAgent] 保存通知状态失败: {exc}")
                     sender('user_message', {
                         'message': user_message,
                         'conversation_id': conversation_id
                     })
-                    entry = get_stop_flag(client_sid, username)
-                    if not isinstance(entry, dict):
-                        entry = {'stop': False, 'task': None, 'terminal': None}
-                    entry['stop'] = False
-                    task_handle = asyncio.create_task(handle_task_with_sender(
-                        terminal=web_terminal,
-                        workspace=workspace,
-                        message=user_message,
-                        images=[],
-                        sender=sender,
-                        client_sid=client_sid,
-                        username=username,
-                        videos=[]
-                    ))
-                    entry['task'] = task_handle
-                    entry['terminal'] = web_terminal
-                    set_stop_flag(client_sid, username, entry)
-                    await task_handle
+                    from .tasks import task_manager
+                    workspace_id = getattr(workspace, "workspace_id", None) or "default"
+                    session_data = {
+                        "username": username,
+                        "role": getattr(web_terminal, "user_role", "user"),
+                        "is_api_user": getattr(web_terminal, "user_role", "") == "api",
+                        "workspace_id": workspace_id,
+                        "run_mode": getattr(web_terminal, "run_mode", None),
+                        "thinking_mode": getattr(web_terminal, "thinking_mode", None),
+                        "model_key": getattr(web_terminal, "model_key", None),
+                    }
+                    rec = task_manager.create_chat_task(
+                        username,
+                        workspace_id,
+                        user_message,
+                        [],
+                        conversation_id,
+                        model_key=session_data.get("model_key"),
+                        thinking_mode=session_data.get("thinking_mode"),
+                        run_mode=session_data.get("run_mode"),
+                        session_data=session_data,
+                    )
+                    debug_log(f"[SubAgent] 补发通知创建后台任务: task_id={rec.task_id}")
                 except Exception as e:
-                    debug_log(f"[SubAgent] 补发完成提示失败: {e}")
-                    import traceback
-                    debug_log(f"[SubAgent] 错误堆栈: {traceback.format_exc()}")
-                finally:
-                    clear_stop_flag(client_sid, username)
+                    debug_log(f"[SubAgent] 补发通知创建后台任务失败，回退直接执行: {e}")
+                    try:
+                        task_handle = asyncio.create_task(handle_task_with_sender(
+                            terminal=web_terminal,
+                            workspace=workspace,
+                            message=user_message,
+                            images=[],
+                            sender=sender,
+                            client_sid=client_sid,
+                            username=username,
+                            videos=[]
+                        ))
+                        await task_handle
+                    except Exception as inner_exc:
+                        debug_log(f"[SubAgent] 补发完成提示失败: {inner_exc}")
+                        import traceback
+                        debug_log(f"[SubAgent] 错误堆栈: {traceback.format_exc()}")
             break
 
+        await asyncio.sleep(5)
+
     debug_log("[SubAgent] 后台轮询结束")
 
 async def handle_task_with_sender(terminal: WebTerminal, workspace: UserWorkspace, message, images, sender, client_sid, username: str, videos=None):
@@ -928,27 +998,37 @@ async def handle_task_with_sender(terminal: WebTerminal, workspace: UserWorkspac
     debug_log(f"  累积响应: {len(accumulated_response)} 字符")
     debug_log(f"{'='*40}\n")
     
-    # 检查是否有后台运行的子智能体
+    # 检查是否有后台运行的子智能体或待通知的完成任务
     manager = getattr(web_terminal, "sub_agent_manager", None)
     has_running_sub_agents = False
     if manager:
+        if not hasattr(web_terminal, "_announced_sub_agent_tasks"):
+            web_terminal._announced_sub_agent_tasks = set()
         running_tasks = [
             task for task in manager.tasks.values()
-            if task.get("status") not in {"completed", "failed", "timeout", "terminated"}
+            if task.get("status") not in TERMINAL_STATUSES.union({"terminated"})
             and task.get("run_in_background")
             and task.get("conversation_id") == conversation_id
         ]
+        pending_notice_tasks = [
+            task for task in manager.tasks.values()
+            if task.get("status") in TERMINAL_STATUSES.union({"terminated"})
+            and task.get("run_in_background")
+            and task.get("conversation_id") == conversation_id
+            and task.get("task_id") not in web_terminal._announced_sub_agent_tasks
+        ]
 
-        if running_tasks:
+        if running_tasks or pending_notice_tasks:
             has_running_sub_agents = True
-            debug_log(f"[SubAgent] 检测到 {len(running_tasks)} 个后台子智能体运行中，通知前端等待")
-            # 先通知前端：有子智能体在运行，保持等待状态
+            notify_tasks = running_tasks + pending_notice_tasks
+            debug_log(f"[SubAgent] 后台子智能体等待: running={len(running_tasks)} pending_notice={len(pending_notice_tasks)}")
+            # 先通知前端：有子智能体在运行/待通知，保持等待状态
             sender('sub_agent_waiting', {
-                'count': len(running_tasks),
-                'tasks': [{'agent_id': t.get('agent_id'), 'summary': t.get('summary')} for t in running_tasks]
+                'count': len(notify_tasks),
+                'tasks': [{'agent_id': t.get('agent_id'), 'summary': t.get('summary')} for t in notify_tasks]
             })
 
-            # 启动后台任务来轮询子智能体完成
+            # 启动后台任务来轮询/补发子智能体完成
             def run_poll():
                 import asyncio
                 loop = asyncio.new_event_loop()
diff --git a/server/chat_flow_task_support.py b/server/chat_flow_task_support.py
index f176222..7c0c27b 100644
--- a/server/chat_flow_task_support.py
+++ b/server/chat_flow_task_support.py
@@ -24,6 +24,15 @@ async def process_sub_agent_updates(*, messages: List[Dict], inline: bool = Fals
 
     for update in updates:
         task_id = update.get("task_id")
+        task_info = manager.tasks.get(task_id) if task_id else None
+        current_conv_id = getattr(getattr(web_terminal, "context_manager", None), "current_conversation_id", None)
+        task_conv_id = task_info.get("conversation_id") if isinstance(task_info, dict) else None
+        if task_conv_id and current_conv_id and task_conv_id != current_conv_id:
+            debug_log(f"[SubAgent] 跳过非当前对话任务: task={task_id} conv={task_conv_id} current={current_conv_id}")
+            continue
+        if task_id and task_info is None:
+            debug_log(f"[SubAgent] 找不到任务详情，跳过: task={task_id}")
+            continue
 
         # 检查是否已经通知过这个任务
         if task_id and task_id in web_terminal._announced_sub_agent_tasks:
@@ -36,9 +45,23 @@ async def process_sub_agent_updates(*, messages: List[Dict], inline: bool = Fals
 
         debug_log(f"[SubAgent] update task={task_id} inline={inline} msg={message}")
 
+        # 记录到对话历史（用于后续 build_messages 转换为 user 消息）
+        if hasattr(web_terminal, "_record_sub_agent_message"):
+            try:
+                web_terminal._record_sub_agent_message(message, task_id, inline=inline)
+            except Exception as exc:
+                debug_log(f"[SubAgent] 记录子智能体消息失败: {exc}")
+
         # 标记任务已通知
         if task_id:
             web_terminal._announced_sub_agent_tasks.add(task_id)
+            if isinstance(task_info, dict):
+                task_info["notified"] = True
+                task_info["updated_at"] = time.time()
+                try:
+                    manager._save_state()
+                except Exception as exc:
+                    debug_log(f"[SubAgent] 保存通知状态失败: {exc}")
 
         debug_log(f"[SubAgent] 计算插入位置")
 
@@ -49,12 +72,13 @@ async def process_sub_agent_updates(*, messages: List[Dict], inline: bool = Fals
                     insert_index = idx + 1
                     break
 
+        # 直接插入 user 消息，确保下一轮调用能看到子智能体完成通知
         messages.insert(insert_index, {
-            "role": "system",
+            "role": "user",
             "content": message,
             "metadata": {"sub_agent_notice": True, "inline": inline, "task_id": task_id}
         })
-        debug_log(f"[SubAgent] 插入系统消息位置: {insert_index}")
+        debug_log(f"[SubAgent] 插入子智能体通知位置: {insert_index}")
         sender('system_message', {
             'content': message,
             'inline': inline
diff --git a/server/chat_flow_tool_loop.py b/server/chat_flow_tool_loop.py
index 7db104f..bb53d8a 100644
--- a/server/chat_flow_tool_loop.py
+++ b/server/chat_flow_tool_loop.py
@@ -461,10 +461,11 @@ async def execute_tool_calls(*, web_terminal, tool_calls, sender, messages, clie
             videos=tool_videos
         )
         debug_log(f"💾 增量保存：工具结果 {function_name}")
-        system_message = result_data.get("system_message") if isinstance(result_data, dict) else None
-        if system_message:
-            web_terminal._record_sub_agent_message(system_message, result_data.get("task_id"), inline=False)
-            maybe_mark_failure_from_message(web_terminal, system_message)
+        if function_name != "wait_sub_agent":
+            system_message = result_data.get("system_message") if isinstance(result_data, dict) else None
+            if system_message:
+                web_terminal._record_sub_agent_message(system_message, result_data.get("task_id"), inline=False)
+                maybe_mark_failure_from_message(web_terminal, system_message)
 
         # 添加到消息历史（用于API继续对话）
         messages.append({
@@ -485,4 +486,3 @@ async def execute_tool_calls(*, web_terminal, tool_calls, sender, messages, clie
 
     return {"stopped": False, "last_tool_call_time": last_tool_call_time}
 
-
diff --git a/server/conversation.py b/server/conversation.py
index 8886087..d801dd2 100644
--- a/server/conversation.py
+++ b/server/conversation.py
@@ -44,6 +44,7 @@ from modules.personalization_manager import (
 from modules.upload_security import UploadSecurityError
 from modules.user_manager import UserWorkspace
 from modules.usage_tracker import QUOTA_DEFAULTS
+from modules.sub_agent_manager import TERMINAL_STATUSES
 from core.web_terminal import WebTerminal
 from utils.tool_result_formatter import format_tool_result_for_context
 from utils.conversation_manager import ConversationManager
@@ -83,6 +84,30 @@ from .conversation_stats import (
 conversation_bp = Blueprint('conversation', __name__)
 
 
+def _terminate_running_sub_agents(terminal: WebTerminal, reason: str = "") -> int:
+    """切换/新建对话时，强制终止当前对话仍在运行的子智能体，并记录系统消息。"""
+    manager = getattr(terminal, "sub_agent_manager", None)
+    if not manager:
+        return 0
+    current_conv_id = getattr(getattr(terminal, "context_manager", None), "current_conversation_id", None)
+    if not current_conv_id:
+        return 0
+    running_tasks = [
+        task for task in manager.tasks.values()
+        if task.get("status") not in TERMINAL_STATUSES.union({"terminated"})
+        and task.get("run_in_background")
+        and task.get("conversation_id") == current_conv_id
+    ]
+    if not running_tasks:
+        return 0
+    stopped_count = 0
+    for task in running_tasks:
+        task_id = task.get("task_id")
+        manager.terminate_sub_agent(task_id=task_id)
+        stopped_count += 1
+    return stopped_count
+
+
 # === 背景生成对话标题（从 app_legacy 拆分） ===
 @conversation_bp.route('/api/conversations', methods=['GET'])
 @api_login_required
@@ -133,6 +158,7 @@ def create_conversation(terminal: WebTerminal, workspace: UserWorkspace, usernam
         thinking_mode = data.get('thinking_mode') if preserve_mode and 'thinking_mode' in data else None
         run_mode = data.get('mode') if preserve_mode and 'mode' in data else None
 
+        _terminate_running_sub_agents(terminal, reason="用户创建新对话")
         result = terminal.create_new_conversation(thinking_mode=thinking_mode, run_mode=run_mode)
 
         if result["success"]:
@@ -207,6 +233,9 @@ def get_conversation_info(terminal: WebTerminal, workspace: UserWorkspace, usern
 def load_conversation(conversation_id, terminal: WebTerminal, workspace: UserWorkspace, username: str):
     """加载特定对话"""
     try:
+        current_id = getattr(getattr(terminal, "context_manager", None), "current_conversation_id", None)
+        if current_id and current_id != conversation_id:
+            _terminate_running_sub_agents(terminal, reason="用户切换对话")
         result = terminal.load_conversation(conversation_id)
 
         if result["success"]:
@@ -425,6 +454,61 @@ def list_sub_agents(terminal: WebTerminal, workspace: UserWorkspace, username: s
     try:
         conversation_id = terminal.context_manager.current_conversation_id
         data = manager.get_overview(conversation_id=conversation_id)
+        debug_log("[SubAgent] /api/sub_agents overview", {
+            "conversation_id": conversation_id,
+            "count": len(data),
+            "tasks": [
+                {
+                    "task_id": item.get("task_id"),
+                    "status": item.get("status"),
+                    "run_in_background": item.get("run_in_background"),
+                    "conversation_id": item.get("conversation_id")
+                } for item in data
+            ]
+        })
+        if not hasattr(terminal, "_announced_sub_agent_tasks"):
+            terminal._announced_sub_agent_tasks = set()
+        announced = terminal._announced_sub_agent_tasks
+        notified_from_history = set()
+        try:
+            history = getattr(terminal.context_manager, "conversation_history", []) or []
+            for msg in history:
+                meta = msg.get("metadata") or {}
+                task_id = meta.get("task_id")
+                if meta.get("sub_agent_notice") and task_id:
+                    notified_from_history.add(task_id)
+        except Exception:
+            notified_from_history = set()
+        for item in data:
+            task_id = item.get("task_id")
+            raw_task = manager.tasks.get(task_id) if task_id else None
+            run_in_background = bool(raw_task.get("run_in_background")) if isinstance(raw_task, dict) else False
+            item["run_in_background"] = run_in_background
+            status = item.get("status")
+            notified_flag = bool(raw_task.get("notified")) if isinstance(raw_task, dict) else False
+            already_notified = (
+                (task_id in announced) or
+                (task_id in notified_from_history) or
+                notified_flag
+            )
+            notice_pending = (
+                run_in_background
+                and task_id
+                and not already_notified
+                and (status in TERMINAL_STATUSES or status == "terminated")
+            )
+            item["notice_pending"] = notice_pending
+        debug_log("[SubAgent] /api/sub_agents notice_pending computed", {
+            "conversation_id": conversation_id,
+            "tasks": [
+                {
+                    "task_id": item.get("task_id"),
+                    "status": item.get("status"),
+                    "run_in_background": item.get("run_in_background"),
+                    "notice_pending": item.get("notice_pending")
+                } for item in data
+            ]
+        })
         return jsonify({"success": True, "data": data})
     except Exception as exc:
         return jsonify({"success": False, "error": str(exc)}), 500
diff --git a/server/tasks.py b/server/tasks.py
index 3d8f074..5dc583d 100644
--- a/server/tasks.py
+++ b/server/tasks.py
@@ -87,6 +87,7 @@ class TaskManager:
         thinking_mode: Optional[bool] = None,
         run_mode: Optional[str] = None,
         max_iterations: Optional[int] = None,
+        session_data: Optional[Dict[str, Any]] = None,
     ) -> TaskRecord:
         if run_mode:
             normalized = str(run_mode).lower()
@@ -100,18 +101,21 @@ class TaskManager:
         task_id = str(uuid.uuid4())
         record = TaskRecord(task_id, username, workspace_id, message, conversation_id, model_key, thinking_mode, run_mode, max_iterations)
         # 记录当前 session 快照，便于后台线程内使用
-        try:
-            record.session_data = {
-                "username": session.get("username"),
-                "role": session.get("role"),
-                "is_api_user": session.get("is_api_user"),
-                "workspace_id": workspace_id,
-                "run_mode": session.get("run_mode"),
-                "thinking_mode": session.get("thinking_mode"),
-                "model_key": session.get("model_key"),
-            }
-        except Exception:
-            record.session_data = {}
+        if session_data is not None:
+            record.session_data = dict(session_data)
+        else:
+            try:
+                record.session_data = {
+                    "username": session.get("username"),
+                    "role": session.get("role"),
+                    "is_api_user": session.get("is_api_user"),
+                    "workspace_id": workspace_id,
+                    "run_mode": session.get("run_mode"),
+                    "thinking_mode": session.get("thinking_mode"),
+                    "model_key": session.get("model_key"),
+                }
+            except Exception:
+                record.session_data = {}
         with self._lock:
             self._tasks[task_id] = record
         thread = threading.Thread(target=self._run_chat_task, args=(record, images), daemon=True)
diff --git a/static/src/app/methods/taskPolling.ts b/static/src/app/methods/taskPolling.ts
index 091c53b..c3fab53 100644
--- a/static/src/app/methods/taskPolling.ts
+++ b/static/src/app/methods/taskPolling.ts
@@ -634,7 +634,11 @@ export const taskPollingMethods = {
 
             // 如果已经在流式输出中，不重复恢复
             if (this.streamingMessage || this.taskInProgress) {
-                debugLog('[TaskPolling] 任务已在进行中，跳过恢复');
+                debugLog('[TaskPolling] 任务已在进行中，跳过恢复', {
+                    streamingMessage: this.streamingMessage,
+                    taskInProgress: this.taskInProgress,
+                    currentConversationId: this.currentConversationId
+                });
                 return;
             }
 
@@ -642,11 +646,18 @@ export const taskPollingMethods = {
             const runningTask = await taskStore.loadRunningTask(this.currentConversationId);
 
             if (!runningTask) {
-                debugLog('[TaskPolling] 没有运行中的任务');
+                debugLog('[TaskPolling] 没有运行中的任务', {
+                    currentConversationId: this.currentConversationId
+                });
+                await this.restoreSubAgentWaitingState();
                 return;
             }
 
-            debugLog('[TaskPolling] 发现运行中的任务，开始恢复状态');
+            debugLog('[TaskPolling] 发现运行中的任务，开始恢复状态', {
+                taskId: runningTask?.task_id,
+                status: runningTask?.status,
+                conversationId: runningTask?.conversation_id
+            });
 
             // 检查历史是否已加载
             const hasMessages = Array.isArray(this.messages) && this.messages.length > 0;
@@ -901,4 +912,70 @@ export const taskPollingMethods = {
             console.error('[TaskPolling] 恢复任务状态失败:', error);
         }
     },
+
+    /**
+     * 恢复子智能体等待状态（页面刷新后调用）
+     */
+    async restoreSubAgentWaitingState(retry = 0) {
+        try {
+            if (!this.currentConversationId) {
+                if (retry < 5) {
+                    setTimeout(() => {
+                        this.restoreSubAgentWaitingState(retry + 1);
+                    }, 300);
+                }
+                return;
+            }
+
+            const response = await fetch('/api/sub_agents');
+            if (!response.ok) {
+                debugLog('[TaskPolling] 获取子智能体状态失败');
+                return;
+            }
+            const result = await response.json();
+            if (!result.success) {
+                debugLog('[TaskPolling] 子智能体状态响应无效');
+                return;
+            }
+
+            const tasks = Array.isArray(result.data) ? result.data : [];
+            debugLog('[TaskPolling] 子智能体状态响应', {
+                total: tasks.length,
+                currentConversationId: this.currentConversationId,
+                tasks: tasks.map((task: any) => ({
+                    task_id: task?.task_id,
+                    status: task?.status,
+                    run_in_background: task?.run_in_background,
+                    notice_pending: task?.notice_pending,
+                    conversation_id: task?.conversation_id
+                }))
+            });
+            const terminalStatuses = new Set(['completed', 'failed', 'timeout', 'terminated']);
+            const relevant = tasks.filter((task: any) => {
+                if (task && task.conversation_id && task.conversation_id !== this.currentConversationId) {
+                    return false;
+                }
+                return true;
+            });
+
+            const running = relevant.filter((task: any) => task?.run_in_background && !terminalStatuses.has(task?.status));
+            const pendingNotice = relevant.filter((task: any) => task?.notice_pending);
+
+            if (running.length || pendingNotice.length) {
+                debugLog('[TaskPolling] 恢复子智能体等待状态', {
+                    running: running.length,
+                    pendingNotice: pendingNotice.length,
+                    runningTasks: running.map((task: any) => ({ task_id: task?.task_id, status: task?.status })),
+                    pendingTasks: pendingNotice.map((task: any) => ({ task_id: task?.task_id, status: task?.status }))
+                });
+                this.waitingForSubAgent = true;
+                this.taskInProgress = true;
+                this.streamingMessage = false;
+                this.stopRequested = false;
+                this.$forceUpdate();
+            }
+        } catch (error) {
+            console.error('[TaskPolling] 恢复子智能体等待状态失败:', error);
+        }
+    },
 };
diff --git a/utils/tool_result_formatter.py b/utils/tool_result_formatter.py
index 570dea8..fed4dff 100644
--- a/utils/tool_result_formatter.py
+++ b/utils/tool_result_formatter.py
@@ -487,6 +487,33 @@ def _format_update_memory(result_data: Dict[str, Any]) -> str:
     return f"记忆已更新。"
 
 
+def _format_sub_agent_stats(stats: Optional[Dict[str, Any]]) -> str:
+    if not isinstance(stats, dict):
+        return ""
+
+    def _to_int(value: Any) -> int:
+        try:
+            return max(0, int(value))
+        except (TypeError, ValueError):
+            return 0
+
+    api_calls = _to_int(stats.get("api_calls") or stats.get("api_call_count") or stats.get("turn_count"))
+    files_read = _to_int(stats.get("files_read"))
+    edit_files = _to_int(stats.get("edit_files"))
+    searches = _to_int(stats.get("searches"))
+    web_pages = _to_int(stats.get("web_pages"))
+    commands = _to_int(stats.get("commands"))
+    lines = [
+        f"调用了{api_calls}次",
+        f"阅读了{files_read}次文件",
+        f"编辑了{edit_files}次文件",
+        f"搜索了{searches}次内容",
+        f"查看了{web_pages}个网页",
+        f"运行了{commands}个指令",
+    ]
+    return "\n".join(lines)
+
+
 def _format_create_sub_agent(result_data: Dict[str, Any]) -> str:
     if not result_data.get("success"):
         return _format_failure("create_sub_agent", result_data)
@@ -497,20 +524,69 @@ def _format_create_sub_agent(result_data: Dict[str, Any]) -> str:
     ref_note = f"，附带 {len(refs)} 份参考文件" if refs else ""
     deliver_dir = result_data.get("deliverables_dir")
     deliver_note = f"，交付目录: {deliver_dir}" if deliver_dir else ""
-    return f"子智能体 #{agent_id} 已创建（task_id={task_id}，状态 {status}{ref_note}{deliver_note}）。"
+    header = f"子智能体 #{agent_id} 已创建（task_id={task_id}，状态 {status}{ref_note}{deliver_note}）。"
+    stats_text = _format_sub_agent_stats(
+        result_data.get("stats") or (result_data.get("final_result") or {}).get("stats")
+    )
+    summary = result_data.get("message") or result_data.get("summary")
+    lines = [header]
+    if stats_text:
+        lines.append(stats_text)
+    if summary and status in {"completed", "failed", "timeout", "terminated"}:
+        lines.append(str(summary))
+    return "\n".join(lines)
 
 
 def _format_wait_sub_agent(result_data: Dict[str, Any]) -> str:
     task_id = result_data.get("task_id")
     agent_id = result_data.get("agent_id")
     status = result_data.get("status")
+    stats_text = _format_sub_agent_stats(result_data.get("stats"))
     if result_data.get("success"):
         copied_path = result_data.get("copied_path") or result_data.get("deliverables_path")
         message = result_data.get("message") or "子智能体任务已完成。"
         deliver_note = f"交付已复制到 {copied_path}" if copied_path else "交付目录已生成"
-        return f"子智能体 #{agent_id}/{task_id} 完成：{message}（{deliver_note}）"
+        lines = [f"子智能体 #{agent_id}/{task_id} 完成"]
+        if stats_text:
+            lines.append(stats_text)
+        lines.append(message)
+        lines.append(deliver_note)
+        return "\n".join(lines)
     message = result_data.get("message") or result_data.get("error") or "子智能体任务失败"
-    return f"⚠️ 子智能体 #{agent_id}/{task_id} 状态 {status}: {message}"
+    lines = [f"⚠️ 子智能体 #{agent_id}/{task_id} 状态 {status}"]
+    if stats_text:
+        lines.append(stats_text)
+    lines.append(message)
+    return "\n".join(lines)
+
+
+def _format_get_sub_agent_status(result_data: Dict[str, Any]) -> str:
+    if not result_data.get("success"):
+        return _format_failure("get_sub_agent_status", result_data)
+    results = result_data.get("results") or []
+    if not results:
+        return "未找到子智能体状态。"
+    blocks = []
+    for item in results:
+        agent_id = item.get("agent_id")
+        if not item.get("found"):
+            blocks.append(f"子智能体 #{agent_id} 未找到。")
+            continue
+        status = item.get("status")
+        summary = None
+        final_result = item.get("final_result") or {}
+        if isinstance(final_result, dict):
+            summary = final_result.get("message") or final_result.get("summary")
+        if not summary:
+            summary = item.get("summary") or ""
+        stats_text = _format_sub_agent_stats(item.get("stats"))
+        lines = [f"子智能体 #{agent_id} 状态: {status}"]
+        if stats_text:
+            lines.append(stats_text)
+        if summary:
+            lines.append(str(summary))
+        blocks.append("\n".join(lines))
+    return "\n\n".join(blocks)
 
 
 def _format_close_sub_agent(result_data: Dict[str, Any]) -> str:
@@ -694,4 +770,5 @@ TOOL_FORMATTERS = {
     "create_sub_agent": _format_create_sub_agent,
     "wait_sub_agent": _format_wait_sub_agent,
     "close_sub_agent": _format_close_sub_agent,
+    "get_sub_agent_status": _format_get_sub_agent_status,
 }