diff --git a/modules/personalization_manager.py b/modules/personalization_manager.py
index a013acb..0dfce29 100644
--- a/modules/personalization_manager.py
+++ b/modules/personalization_manager.py
@@ -91,6 +91,7 @@ DEFAULT_PERSONALIZATION_CONFIG: Dict[str, Any] = {
     "deep_compress_behavior": "continue",  # 手动压缩行为：continue-注入并触发请求 / wait-仅插入等待用户
     "silent_tool_disable": True,  # 禁用工具时不向模型插入提示（默认开启）
     "enhanced_tool_display": True,  # 增强工具显示
+    "compact_message_display": "full",  # 简略消息显示：full-完整原始内容 / brief-一行概要
     "show_git_status_bar": True,  # 是否显示输入栏上方 Git 状态栏
     "versioning_restore_mode": "overwrite",  # 版本回溯模式固定为 overwrite
     "agents_md_auto_inject": False,  # AGENTS.md 自动注入开关
@@ -414,6 +415,13 @@ def sanitize_personalization_payload(
     else:
         base["enhanced_tool_display"] = bool(base.get("enhanced_tool_display", True))
 
+    # 简略消息显示：full（完整原始内容）/ brief（一行概要）
+    compact_msg = data.get("compact_message_display", base.get("compact_message_display"))
+    if isinstance(compact_msg, str) and compact_msg.strip().lower() in ("full", "brief"):
+        base["compact_message_display"] = compact_msg.strip().lower()
+    else:
+        base["compact_message_display"] = "full"
+
     # Git 状态栏显示开关
     if "show_git_status_bar" in data:
         base["show_git_status_bar"] = bool(data.get("show_git_status_bar"))
diff --git a/static/src/components/chat/ChatArea.vue b/static/src/components/chat/ChatArea.vue
index b8d6b8c..d259092 100644
--- a/static/src/components/chat/ChatArea.vue
+++ b/static/src/components/chat/ChatArea.vue
@@ -634,7 +634,11 @@ const blockDisplayMode = computed(() => {
   return personalization.experiments.blockDisplayMode || 'stacked';
 });
 const compactMessageDisplay = computed(() => {
-  return personalization.experiments.compactMessageDisplay || 'full';
+  return (
+    personalization.form.compact_message_display ||
+    personalization.experiments.compactMessageDisplay ||
+    'full'
+  );
 });
 const stackedBlocksEnabled = computed(() => {
   // 堆叠模式和极简模式都使用堆叠布局
diff --git a/static/src/components/personalization/PersonalizationDrawer.vue b/static/src/components/personalization/PersonalizationDrawer.vue
index aa97c3b..498c1ac 100644
--- a/static/src/components/personalization/PersonalizationDrawer.vue
+++ b/static/src/components/personalization/PersonalizationDrawer.vue
@@ -1779,7 +1779,9 @@ const blockDisplayLabel = computed(() => {
   );
 });
 
-const currentCompactMessageDisplay = computed(() => experiments.value.compactMessageDisplay);
+const currentCompactMessageDisplay = computed(
+  () => form.value.compact_message_display || 'full'
+);
 
 const compactMessageDisplayLabel = computed(() => {
   return (
diff --git a/static/src/stores/personalization.ts b/static/src/stores/personalization.ts
index bf615d6..c2e8598 100644
--- a/static/src/stores/personalization.ts
+++ b/static/src/stores/personalization.ts
@@ -21,6 +21,7 @@ interface PersonalForm {
   skill_strict_run_command_background_enabled: boolean;
   silent_tool_disable: boolean;
   enhanced_tool_display: boolean;
+  compact_message_display: CompactMessageDisplay;
   show_git_status_bar: boolean;
   enhanced_tool_display_categories: string[];
   enabled_skills: string[];
@@ -116,6 +117,7 @@ const defaultForm = (): PersonalForm => ({
   skill_strict_run_command_background_enabled: false,
   silent_tool_disable: false,
   enhanced_tool_display: true,
+  compact_message_display: 'full',
   show_git_status_bar: true,
   enhanced_tool_display_categories: [],
   enabled_skills: [],
@@ -295,6 +297,7 @@ export const usePersonalizationStore = defineStore('personalization', {
           !!data.skill_strict_run_command_background_enabled,
         silent_tool_disable: !!data.silent_tool_disable,
         enhanced_tool_display: data.enhanced_tool_display !== false,
+        compact_message_display: data.compact_message_display === 'brief' ? 'brief' : 'full',
         show_git_status_bar: data.show_git_status_bar !== false,
         enhanced_tool_display_categories: Array.isArray(data.enhanced_tool_display_categories)
           ? data.enhanced_tool_display_categories.filter((item: unknown) => typeof item === 'string')
@@ -381,6 +384,18 @@ export const usePersonalizationStore = defineStore('personalization', {
       if (this.form.default_hide_workspace) {
         useUiStore().setWorkspaceCollapsed(true);
       }
+      // 简略消息显示：以配置文件为准，同步到旧版 localStorage 镜像供 ChatArea 读取。
+      // 一次性迁移：后端仍为默认 full，但本地缓存遗留 brief（旧版纯前端记录）时，回写到配置文件。
+      const cachedCompact = this.experiments.compactMessageDisplay;
+      if (this.form.compact_message_display === 'full' && cachedCompact === 'brief') {
+        this.form = { ...this.form, compact_message_display: 'brief' };
+        void this.persistCompactMessageDisplay('brief');
+      }
+      this.experiments = {
+        ...this.experiments,
+        compactMessageDisplay: this.form.compact_message_display
+      };
+      this.persistExperiments();
       this.clearFeedback();
     },
     applyTheme(theme: 'classic' | 'light' | 'dark') {
@@ -791,11 +806,35 @@ export const usePersonalizationStore = defineStore('personalization', {
       this.persistExperiments();
     },
     setCompactMessageDisplay(mode: CompactMessageDisplay) {
+      const target: CompactMessageDisplay = mode === 'brief' ? 'brief' : 'full';
+      this.form = {
+        ...this.form,
+        compact_message_display: target
+      };
+      // 同步旧版 localStorage 镜像，保持兼容并避免迁移逻辑回写旧值
       this.experiments = {
         ...this.experiments,
-        compactMessageDisplay: mode
+        compactMessageDisplay: target
       };
       this.persistExperiments();
+      this.clearFeedback();
+      // 持久化到后端配置文件（即时保存，参照主题/默认隐藏工作区）
+      void this.persistCompactMessageDisplay(target);
+    },
+    async persistCompactMessageDisplay(mode: CompactMessageDisplay) {
+      try {
+        const resp = await fetch('/api/personalization', {
+          method: 'POST',
+          headers: { 'Content-Type': 'application/json' },
+          body: JSON.stringify({ compact_message_display: mode })
+        });
+        const result = await resp.json();
+        if (!resp.ok || !result.success) {
+          console.warn('保存简略消息显示失败:', result?.error);
+        }
+      } catch (error) {
+        console.warn('保存简略消息显示失败:', error);
+      }
     },
     setCommunicationStyle(style: 'default' | 'human_like') {
       this.form = {