diff --git a/desktop/src/stores/sessionStore.test.ts b/desktop/src/stores/sessionStore.test.ts
index 6c91cb85..48d57d8d 100644
--- a/desktop/src/stores/sessionStore.test.ts
+++ b/desktop/src/stores/sessionStore.test.ts
@@ -15,6 +15,7 @@ vi.mock('../api/sessions', () => ({
 }))
 
 import { useSessionStore } from './sessionStore'
+import { useTabStore } from './tabStore'
 
 const initialState = useSessionStore.getState()
 
@@ -43,10 +44,12 @@ describe('sessionStore', () => {
       selectedProjects: [],
       availableProjects: [],
     })
+    useTabStore.setState({ tabs: [], activeTabId: null })
   })
 
   afterEach(() => {
     useSessionStore.setState(initialState)
+    useTabStore.setState({ tabs: [], activeTabId: null })
   })
 
   it('returns a new session id before the background refresh completes', async () => {
@@ -111,6 +114,27 @@ describe('sessionStore', () => {
     expect(useSessionStore.getState().sessions[0]?.title).toBe('开始优化UI')
   })
 
+  it('syncs refreshed session titles into already-open tabs', async () => {
+    useTabStore.getState().openTab('session-title-2', '```json {"title":')
+    listMock.mockResolvedValue({
+      sessions: [{
+        id: 'session-title-2',
+        title: '使用bash写一个shell，随便写点什么东西',
+        createdAt: '2026-05-07T00:00:00.000Z',
+        modifiedAt: '2026-05-07T00:00:01.000Z',
+        messageCount: 3,
+        projectPath: '',
+        workDir: '/workspace/project',
+        workDirExists: true,
+      }],
+      total: 1,
+    })
+
+    await useSessionStore.getState().fetchSessions()
+
+    expect(useTabStore.getState().tabs[0]?.title).toBe('使用bash写一个shell，随便写点什么东西')
+  })
+
   it('forwards direct branch switch repository options when creating a session', async () => {
     createMock.mockResolvedValue({ sessionId: 'session-branch-switch', workDir: '/workspace/repo' })
     listMock.mockResolvedValue({ sessions: [], total: 0 })
diff --git a/desktop/src/stores/sessionStore.ts b/desktop/src/stores/sessionStore.ts
index cf11b11c..223aaa1e 100644
--- a/desktop/src/stores/sessionStore.ts
+++ b/desktop/src/stores/sessionStore.ts
@@ -1,6 +1,7 @@
 import { create } from 'zustand'
 import { sessionsApi, type CreateSessionRepositoryOptions } from '../api/sessions'
 import { useSessionRuntimeStore } from './sessionRuntimeStore'
+import { useTabStore } from './tabStore'
 import type { SessionListItem } from '../types/session'
 import { isPlaceholderSessionTitle } from '../lib/sessionTitle'
 
@@ -37,6 +38,7 @@ export const useSessionStore = create<SessionStore>((set, get) => ({
     set({ isLoading: true, error: null })
     try {
       const { sessions: raw } = await sessionsApi.list({ project, limit: 100 })
+      let syncedSessions: SessionListItem[] = []
       set((state) => {
         const currentById = new Map(state.sessions.map((session) => [session.id, session]))
         // Deduplicate by session ID - keep the most recently modified entry.
@@ -50,9 +52,11 @@ export const useSessionStore = create<SessionStore>((set, get) => ({
           }
         }
         const sessions = [...byId.values()]
+        syncedSessions = sessions
         const availableProjects = [...new Set(sessions.map((s) => s.projectPath).filter(Boolean))].sort()
         return { sessions, availableProjects, isLoading: false }
       })
+      syncOpenSessionTabTitles(syncedSessions)
     } catch (err) {
       set({ error: (err as Error).message, isLoading: false })
     }
@@ -126,3 +130,15 @@ function preserveLocalTitle(
   }
   return incoming
 }
+
+function syncOpenSessionTabTitles(sessions: SessionListItem[]): void {
+  const titleById = new Map(sessions.map((session) => [session.id, session.title]))
+  const { tabs, updateTabTitle } = useTabStore.getState()
+  for (const tab of tabs) {
+    if (tab.type !== 'session') continue
+    const title = titleById.get(tab.sessionId)
+    if (title && title !== tab.title) {
+      updateTabTitle(tab.sessionId, title)
+    }
+  }
+}
diff --git a/desktop/src/stores/tabStore.test.ts b/desktop/src/stores/tabStore.test.ts
new file mode 100644
index 00000000..b90db356
--- /dev/null
+++ b/desktop/src/stores/tabStore.test.ts
@@ -0,0 +1,22 @@
+import { beforeEach, describe, expect, it } from 'vitest'
+import { useTabStore } from './tabStore'
+
+describe('tabStore', () => {
+  beforeEach(() => {
+    useTabStore.setState({ tabs: [], activeTabId: null })
+    localStorage.clear()
+  })
+
+  it('refreshes an existing tab title when opening the same session again', () => {
+    useTabStore.getState().openTab('session-1', '```json {"title":')
+    useTabStore.getState().openTab('session-1', '使用bash写一个shell，随便写点什么东西')
+
+    expect(useTabStore.getState().tabs).toHaveLength(1)
+    expect(useTabStore.getState().tabs[0]).toMatchObject({
+      sessionId: 'session-1',
+      title: '使用bash写一个shell，随便写点什么东西',
+      type: 'session',
+    })
+    expect(useTabStore.getState().activeTabId).toBe('session-1')
+  })
+})
diff --git a/desktop/src/stores/tabStore.ts b/desktop/src/stores/tabStore.ts
index edc9ac03..1d4d7ad9 100644
--- a/desktop/src/stores/tabStore.ts
+++ b/desktop/src/stores/tabStore.ts
@@ -49,8 +49,12 @@ export const useTabStore = create<TabStore>((set, get) => ({
     if (existing) {
       set({
         tabs: tabs.map((tab) =>
-          tab.sessionId === sessionId && !(tab as Partial<Tab>).type
-            ? { ...tab, type }
+          tab.sessionId === sessionId
+            ? {
+                ...tab,
+                title,
+                ...(!(tab as Partial<Tab>).type ? { type } : {}),
+              }
             : tab,
         ),
         activeTabId: sessionId,