diff --git a/apps/desktop/src/renderer/features/tabs/TabBar.tsx b/apps/desktop/src/renderer/features/tabs/TabBar.tsx
index d369e3d..570cbe5 100644
--- a/apps/desktop/src/renderer/features/tabs/TabBar.tsx
+++ b/apps/desktop/src/renderer/features/tabs/TabBar.tsx
@@ -7,10 +7,12 @@ export function TabBar() {
   const { openDoc, currentPath } = useStore();
   const [hoveredTab, setHoveredTab] = useState<string | null>(null);
 
-  // 当 activeId 变化，加载对应标签的文档
+  // 当 activeId 变化，加载对应标签的文档；标签全部关闭时清空编辑器
+  const resetEditor = useStore(s => s.resetEditor);
   useEffect(() => {
     const tab = tabs.find(t => t.id === activeId);
     if (tab && tab.path !== currentPath) openDoc(tab.path);
+    else if (!activeId && currentPath) resetEditor();
   }, [activeId]);
 
   if (tabs.length === 0) return null;
diff --git a/apps/desktop/tests/e2e/button-all.spec.ts b/apps/desktop/tests/e2e/button-all.spec.ts
index 706567b..1682087 100644
--- a/apps/desktop/tests/e2e/button-all.spec.ts
+++ b/apps/desktop/tests/e2e/button-all.spec.ts
@@ -321,3 +321,21 @@ test('TabBar: 固定+关闭可用', async () => {
   await expect(a.page.getByTestId('tabbar').getByText('Tab2', { exact: true })).toHaveCount(0, { timeout: 3000 });
   await a.app.close();
 });
+
+test('TabBar: 关闭全部标签后编辑器应显示空状态', async () => {
+  const a = await launch(nodePath.join(os.tmpdir(), 'hn-close-all-' + Date.now()));
+  await setupVault(a, [{ name: 'CloseAllTest', body: '# 关闭全部测试\n正文内容' }]);
+  // 打开文档
+  await a.page.getByTestId('filetree').getByText('CloseAllTest', { exact: true }).click();
+  await expect(a.page.getByTestId('tabbar').getByText('CloseAllTest', { exact: true })).toBeVisible();
+  // 编辑器应显示文档内容
+  await expect(a.page.locator('.ProseMirror')).toContainText('关闭全部测试');
+  // 关闭标签页（span 文本 x）
+  const tab = a.page.getByTestId('tabbar').locator('div').filter({ hasText: 'CloseAllTest' }).first();
+  await tab.locator('span').filter({ hasText: 'x' }).click();
+  await a.page.waitForTimeout(500);
+  // 标签栏为空 → 当前文档应重置，编辑器显示空状态提示
+  expect(await a.page.evaluate(() => (globalThis as any).__STORE__?.getState?.().currentPath)).toBeNull();
+  await expect(a.page.getByText('从左侧选择一篇笔记')).toBeVisible({ timeout: 5000 });
+  await a.app.close();
+});