diff --git a/core/main_terminal.py b/core/main_terminal.py
index 2e30875..4a3759c 100644
--- a/core/main_terminal.py
+++ b/core/main_terminal.py
@@ -2010,6 +2010,8 @@ class MainTerminal:
                     task_id=arguments.get("task_id"),
                     agent_id=arguments.get("agent_id")
                 )
+                message = result.get("message") or result.get("error")
+                self._record_sub_agent_message(message, result.get("task_id"), inline=False)
             
             else:
                 result = {"success": False, "error": f"未知工具: {tool_name}"}
diff --git a/core/tool_config.py b/core/tool_config.py
index 48a9d7b..1d2c114 100644
--- a/core/tool_config.py
+++ b/core/tool_config.py
@@ -58,6 +58,6 @@ TOOL_CATEGORIES: Dict[str, ToolCategory] = {
     ),
     "sub_agent": ToolCategory(
         label="子智能体",
-        tools=["create_sub_agent", "wait_sub_agent"],
+        tools=["create_sub_agent", "wait_sub_agent", "close_sub_agent"],
     ),
 }
diff --git a/modules/sub_agent_manager.py b/modules/sub_agent_manager.py
index 00a2083..6b01cf7 100644
--- a/modules/sub_agent_manager.py
+++ b/modules/sub_agent_manager.py
@@ -219,6 +219,7 @@ class SubAgentManager:
 
         task_id = task["task_id"]
         response = self._call_service("POST", f"/tasks/{task_id}/terminate", timeout=10)
+        response["task_id"] = task_id
         if response.get("success"):
             task["status"] = "terminated"
             task["final_result"] = {
@@ -229,6 +230,8 @@ class SubAgentManager:
                 "message": response.get("message") or "子智能体已被强制关闭。",
             }
             self._save_state()
+        if "system_message" not in response:
+            response["system_message"] = response.get("message")
         return response
 
     # ------------------------------------------------------------------
diff --git a/sub_agent/static/app.js b/sub_agent/static/app.js
index 8779d61..f3d48ad 100644
--- a/sub_agent/static/app.js
+++ b/sub_agent/static/app.js
@@ -175,6 +175,7 @@ async function bootstrapApp() {
                 
                 // 停止功能状态
                 stopRequested: false,
+                terminating: false,
 
                 // 路由相关
                 initialRouteResolved: false,
@@ -633,6 +634,37 @@ async function bootstrapApp() {
                 }
             },
 
+            async terminateSubAgentTask() {
+                if (!this.subAgentTaskId || this.terminating) {
+                    return;
+                }
+                const shouldTerminate = window.confirm('确定要立即关闭子智能体吗？此操作无法撤销。');
+                if (!shouldTerminate) {
+                    return;
+                }
+                this.terminating = true;
+                try {
+                    const resp = await fetch(`/tasks/${encodeURIComponent(this.subAgentTaskId)}/terminate`, { method: 'POST' });
+                    let data = null;
+                    try {
+                        data = await resp.json();
+                    } catch (err) {
+                        data = { success: false, error: await resp.text() };
+                    }
+                    if (!resp.ok || !data.success) {
+                        const message = (data && (data.error || data.message)) || '关闭失败';
+                        alert(`关闭子智能体失败：${message}`);
+                        return;
+                    }
+                    this.addSystemMessage('🛑 子智能体已被手动关闭。');
+                } catch (error) {
+                    console.warn('关闭子智能体失败:', error);
+                    alert(`关闭子智能体失败：${error.message || error}`);
+                } finally {
+                    this.terminating = false;
+                }
+            },
+
             formatPathDisplay(path) {
                 if (!path) {
                     return '—';
@@ -647,7 +679,8 @@ async function bootstrapApp() {
                     pending: '等待中',
                     completed: '已完成',
                     failed: '失败',
-                    timeout: '超时'
+                    timeout: '超时',
+                    terminated: '已关闭'
                 };
                 return map[status] || status;
             },
diff --git a/sub_agent/static/index.html b/sub_agent/static/index.html
index e7f0557..92aef06 100644
--- a/sub_agent/static/index.html
+++ b/sub_agent/static/index.html
@@ -59,6 +59,13 @@
                     <span class="thinking-mode" v-else>
                         状态: {{ formatSubAgentStatus(subAgentTaskInfo.status) }}
                     </span>
+                    <button v-if="isSubAgentView"
+                            type="button"
+                            class="btn stop-btn terminate-btn"
+                            @click="terminateSubAgentTask"
+                            :disabled="terminating">
+                        {{ terminating ? '关闭中...' : '关闭子智能体' }}
+                    </button>
                     <span class="connection-status" :class="{ connected: isConnected }">
                         <span class="status-dot" :class="{ active: isConnected }"></span>
                         {{ isConnected ? '已连接' : '未连接' }}
@@ -228,39 +235,6 @@
                         </span>
                     </div>
                     
-                    <!-- Token区域包装器 -->
-                    <div class="token-wrapper" v-if="currentConversationId">
-                        <!-- Token统计显示面板 -->
-                        <div class="token-display-panel" :class="{ collapsed: tokenPanelCollapsed }">
-                            <div class="token-panel-content">
-                                <div class="token-stats">
-                                    <div class="token-item">
-                                        <span class="token-label">当前上下文</span>
-                                        <span class="token-value current">{{ formatTokenCount(currentContextTokens || 0) }}</span>
-                                    </div>
-                                    
-                                    <div class="token-separator"></div>
-                                    
-                                    <div class="token-item">
-                                        <span class="token-label">累计输入</span>
-                                        <span class="token-value input">{{ formatTokenCount(currentConversationTokens.cumulative_input_tokens || 0) }}</span>
-                                    </div>
-                                    
-                                    <div class="token-item">
-                                        <span class="token-label">累计输出</span>
-                                        <span class="token-value output">{{ formatTokenCount(currentConversationTokens.cumulative_output_tokens || 0) }}</span>
-                                    </div>
-                                </div>
-                            </div>
-                        </div>
-                        
-                        <!-- 独立的切换按钮 -->
-                        <button @click="toggleTokenPanel" class="token-toggle-btn" :class="{ collapsed: tokenPanelCollapsed }">
-                            <span v-if="!tokenPanelCollapsed">▲</span>
-                            <span v-else>▼</span>
-                        </button>
-                    </div>
-                    
                     <div class="messages-area" ref="messagesArea">
                         <div v-for="(msg, index) in messages" :key="index" class="message-block">
                             
diff --git a/sub_agent/static/style.css b/sub_agent/static/style.css
index baca62f..7271659 100644
--- a/sub_agent/static/style.css
+++ b/sub_agent/static/style.css
@@ -24,6 +24,7 @@
     --claude-shadow: 0 14px 36px rgba(61, 57, 41, 0.12);
     --claude-success: #76b086;
     --claude-warning: #d99845;
+    --claude-danger: #d65a5a;
 }
 
 html, body {
@@ -86,6 +87,21 @@ body {
     letter-spacing: 0.04em;
 }
 
+.terminate-btn {
+    background: var(--claude-danger);
+    color: #fff6f6;
+    border: none;
+    padding: 6px 14px;
+    border-radius: 6px;
+    font-size: 13px;
+    cursor: pointer;
+}
+
+.terminate-btn:disabled {
+    opacity: 0.6;
+    cursor: not-allowed;
+}
+
 .connection-status {
     font-size: 13px;
     color: var(--claude-text-secondary);
@@ -1373,11 +1389,6 @@ body {
     margin-left: 8px;
 }
 
-/* 输入区域 */
-.token-wrapper {
-    flex-shrink: 0;
-}
-
 .input-area {
     background: rgba(255, 255, 255, 0.82);
     border-top: 1px solid var(--claude-border);
@@ -1530,9 +1541,6 @@ body {
     .messages-area {
         padding: 16px 18px;
     }
-    .token-wrapper {
-        margin-bottom: 8px;
-    }
     .input-area {
         padding: 14px;
     }
@@ -1862,230 +1870,7 @@ body {
     color: var(--claude-text-secondary);
 }
 
-.token-count {
-    color: var(--claude-accent);
-    font-weight: 500;
-}
-/* ========================================= */
-/* Token 统计面板样式（无缝一体版）*/
-/* ========================================= */
 
-/* Token区域包装器 */
-.token-wrapper {
-    position: relative;
-    z-index: 5;
-    margin-bottom: 0;
-}
-
-/* 当前对话信息栏 - 移除底部边框 */
-.current-conversation-info {
-    position: relative;
-    z-index: 10;
-    background: var(--claude-panel);
-    backdrop-filter: blur(18px);
-    border-bottom: none;  /* 移除边框，让它和下面的面板融为一体 */
-    padding: 12px 20px;
-    display: flex;
-    justify-content: space-between;
-    align-items: center;
-    font-size: 14px;
-    color: var(--claude-text-secondary);
-    border-radius: 0;  /* 顶部保持直角 */
-    box-shadow: 0 12px 28px rgba(61, 57, 41, 0.06);
-}
-
-/* Token面板 - 与标题栏完全一体，底部圆角 */
-.token-display-panel {
-    background: var(--claude-panel);
-    backdrop-filter: blur(18px);
-    border: none;
-    border-radius: 0 0 16px 16px;
-    box-shadow: 0 8px 18px rgba(189, 93, 58, 0.12);
-    overflow: hidden;
-    transition: all 0.5s cubic-bezier(0.4, 0, 0.2, 1);
-    width: 100%;
-    margin: 0;
-    padding: 0;
-}
-
-/* 展开状态 */
-.token-display-panel:not(.collapsed) {
-    height: 80px;
-    opacity: 1;
-}
-
-/* 收起状态 */
-.token-display-panel.collapsed {
-    height: 0;
-    opacity: 0;
-    border: none;
-    box-shadow: none;
-}
-
-.token-panel-content {
-    padding: 16px 24px;
-    height: 100%;
-    transition: all 0.5s cubic-bezier(0.4, 0, 0.2, 1);
-}
-
-.token-display-panel.collapsed .token-panel-content {
-    opacity: 0;
-    pointer-events: none;
-}
-
-.token-stats {
-    display: flex;
-    gap: 32px;
-    align-items: center;
-    justify-content: center;
-    font-size: 13px;
-    height: 100%;
-}
-
-.token-item {
-    display: flex;
-    flex-direction: column;
-    align-items: center;
-    gap: 4px;
-    min-width: 80px;
-}
-
-.token-label {
-    color: var(--claude-text-secondary);
-    font-size: 11px;
-    font-weight: 500;
-    text-transform: uppercase;
-    letter-spacing: 0.5px;
-}
-
-.token-value {
-    color: var(--claude-text);
-    font-weight: 600;
-    font-size: 18px;
-    font-variant-numeric: tabular-nums;
-}
-
-.token-value.current { 
-    color: var(--claude-accent);
-    font-size: 20px;
-}
-.token-value.input { color: var(--claude-success); }
-.token-value.output { color: var(--claude-warning); }
-
-.token-separator {
-    width: 1px;
-    height: 35px;
-    background: linear-gradient(to bottom, 
-        transparent, 
-        rgba(218, 119, 86, 0.25) 20%, 
-        rgba(218, 119, 86, 0.25) 80%, 
-        transparent
-    );
-    margin: 0 8px;
-}
-
-/* 切换按钮 - 独立定位 */
-.token-toggle-btn {
-    position: absolute;
-    right: 24px;
-    bottom: -18px;  /* 相对于wrapper底部 */
-    width: 36px;
-    height: 36px;
-    border-radius: 50%;
-    border: 2px solid rgba(218, 119, 86, 0.3);
-    cursor: pointer;
-    display: flex;
-    align-items: center;
-    justify-content: center;
-    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
-    z-index: 15;
-    font-size: 14px;
-    font-weight: bold;
-}
-
-/* 展开状态 */
-.token-toggle-btn:not(.collapsed) {
-    background: linear-gradient(135deg, #ffffff 0%, rgba(255, 248, 242, 0.9) 100%);
-    color: var(--claude-accent);
-    box-shadow: 0 3px 10px rgba(189, 93, 58, 0.18);
-}
-
-/* 收起状态 - 在标题栏下方露出一半 */
-.token-toggle-btn.collapsed {
-    background: linear-gradient(135deg, var(--claude-accent) 0%, var(--claude-accent-strong) 100%);
-    color: #fff8f2;
-    border-color: rgba(255, 248, 242, 0.55);
-    box-shadow: 0 3px 11px rgba(189, 93, 58, 0.22);
-}
-
-.token-toggle-btn:hover {
-    transform: scale(1.05);
-    box-shadow: 0 5px 16px rgba(189, 93, 58, 0.26);
-}
-
-.token-toggle-btn.collapsed:hover {
-    background: linear-gradient(135deg, var(--claude-button-hover) 0%, var(--claude-button-active) 100%);
-}
-
-.token-toggle-btn:active {
-    transform: scale(1.02);
-}
-
-/* 箭头样式 - 移除浮动动画 */
-.token-toggle-btn span {
-    transition: all 0.3s ease;
-    display: inline-block;
-}
-
-/* 移除动画效果 */
-/* .token-toggle-btn:not(.collapsed) span {
-    animation: arrowBounceUp 2s ease-in-out infinite;
-}
-
-.token-toggle-btn.collapsed span {
-    animation: arrowBounceDown 2s ease-in-out infinite;
-} */
-
-/* 保留动画定义，但不使用 */
-@keyframes arrowBounceUp {
-    0%, 100% { transform: translateY(0); }
-    50% { transform: translateY(-3px); }
-}
-
-@keyframes arrowBounceDown {
-    0%, 100% { transform: translateY(0); }
-    50% { transform: translateY(3px); }
-}
-
-/* 响应式调整 */
-@media (max-width: 768px) {
-    .token-stats {
-        gap: 16px;
-    }
-    
-    .token-item {
-        min-width: 60px;
-    }
-    
-    .token-value {
-        font-size: 15px;
-    }
-    
-    .token-value.current {
-        font-size: 17px;
-    }
-    
-    .token-label {
-        font-size: 10px;
-    }
-    
-    .token-toggle-btn {
-        width: 32px;
-        height: 32px;
-        font-size: 12px;
-        right: 16px;
-    }
-}
 /* Markdown列表样式 - 修复偏左问题 */
 .text-content ul,
 .text-content ol {
diff --git a/sub_agent/web_server.py b/sub_agent/web_server.py
index 3728e97..b12569e 100644
--- a/sub_agent/web_server.py
+++ b/sub_agent/web_server.py
@@ -74,6 +74,7 @@ user_terminals: Dict[str, WebTerminal] = {}
 terminal_rooms: Dict[str, set] = {}
 connection_users: Dict[str, str] = {}
 stop_flags: Dict[str, Dict[str, Any]] = {}
+terminated_tasks: set = set()
 
 DEFAULT_PORT = 8092
 
@@ -269,6 +270,7 @@ def _purge_sub_agent_task(task_id: str):
             terminal.close()
         except Exception:
             pass
+    terminated_tasks.discard(task_id)
     room_sids = sub_agent_rooms.pop(task_id, set())
     for sid in list(room_sids):
         sub_agent_connections.pop(sid, None)
@@ -2065,6 +2067,7 @@ def create_sub_agent_task(payload: Dict[str, Any]) -> Dict[str, Any]:
         metadata=metadata,
         message_callback=None,
     )
+    terminal.task_id = task_id
 
     def _finish_hook(result: Dict[str, Any]):
         reason = result.get("reason", "")
@@ -2152,10 +2155,10 @@ def force_terminate_sub_agent(task_id: str) -> Dict[str, Any]:
     update_sub_agent_task(task_id, status="terminated")
     broadcast_sub_agent_event(task_id, "sub_agent_status", {
         "status": "terminated",
-        "message": "子智能体已强制关闭"
+        "message": "子智能体已被手动关闭"
     })
     _purge_sub_agent_task(task_id)
-    return {"success": True, "message": "子智能体已强制关闭"}
+    return {"success": True, "message": "子智能体已被手动关闭"}
 
 
 # ==========================================
@@ -2438,6 +2441,7 @@ def process_message_task(terminal: WebTerminal, message: str, sender, client_sid
             stop_flags[client_sid]['task'] = task
             stop_flags[client_sid]['terminal'] = terminal
         
+        task_id = getattr(terminal, "task_id", None)
         try:
             loop.run_until_complete(task)
         except asyncio.CancelledError:
@@ -2447,6 +2451,9 @@ def process_message_task(terminal: WebTerminal, message: str, sender, client_sid
                 'reason': 'user_requested'
             })
             reset_system_state(terminal)
+        finally:
+            if task_id:
+                terminated_tasks.discard(task_id)
         
         loop.close()
     except Exception as e:
@@ -3145,6 +3152,10 @@ async def handle_task_with_sender(terminal: WebTerminal, message, sender, client
     for iteration in range(max_iterations):
         total_iterations += 1
         debug_log(f"\n--- 迭代 {iteration + 1}/{max_iterations} 开始 ---")
+        task_id = getattr(web_terminal, "task_id", None)
+        if task_id and task_id in terminated_tasks:
+            sender('system_message', {'content': '🛑 子智能体已被手动关闭。'})
+            break
         
         # 检查是否超过总工具调用限制
         if total_tool_calls >= MAX_TOTAL_TOOL_CALLS: