diff --git a/frontend/src/pages/approval/list.tsx b/frontend/src/pages/approval/list.tsx
index 024188b..76d2445 100644
--- a/frontend/src/pages/approval/list.tsx
+++ b/frontend/src/pages/approval/list.tsx
@@ -47,8 +47,10 @@ export default function ApprovalList() {
   const navigate = useNavigate()
   const location = useLocation()
 
-  // 从 location.state 获取之前的 tab，默认为 'my'
-  const initialTab = ((location.state as any)?.fromTab as string) || 'my'
+  // 优先从 sessionStorage 恢复 tab，其次从 location.state，最后默认为 'my'
+  const savedTab = sessionStorage.getItem('approval-tab') as string
+  const stateTab = ((location.state as any)?.fromTab as string) || undefined
+  const initialTab = (savedTab && ['my', 'pending', 'approved', 'cc'].includes(savedTab)) ? savedTab : (stateTab || 'my')
   const [activeTab, setActiveTab] = useState<'my' | 'pending' | 'approved' | 'cc'>(initialTab)
   const [list, setList] = useState<ApprovalItem[]>([])
   const [loading, setLoading] = useState(false)
@@ -117,7 +119,9 @@ export default function ApprovalList() {
   // 切换标签
   const handleTabChange = (key: string) => {
     console.log('🔄 Tab changing from', activeTab, 'to', key)
-    setActiveTab(key as 'my' | 'pending' | 'approved')
+    setActiveTab(key as 'my' | 'pending' | 'approved' | 'cc')
+    // 保存 tab 到 sessionStorage
+    sessionStorage.setItem('approval-tab', key)
     setList([])
     setHasMore(false)
     setPage(1)
diff --git a/frontend/src/pages/business-trip/list.tsx b/frontend/src/pages/business-trip/list.tsx
index b3a0483..492902f 100644
--- a/frontend/src/pages/business-trip/list.tsx
+++ b/frontend/src/pages/business-trip/list.tsx
@@ -33,8 +33,10 @@ export default function BusinessTripList() {
   const navigate = useNavigate()
   const location = useLocation()
 
-  // 从 location.state 获取之前的 tab，默认为 'my'
-  const initialTab = ((location.state as any)?.fromTab as string) || 'my'
+  // 优先从 sessionStorage 恢复 tab，其次从 location.state，最后默认为 'my'
+  const savedTab = sessionStorage.getItem('business-trip-tab') as string
+  const stateTab = ((location.state as any)?.fromTab as string) || undefined
+  const initialTab = (savedTab && ['my', 'pending', 'approved'].includes(savedTab)) ? savedTab : (stateTab || 'my')
   const [activeTab, setActiveTab] = useState<'my' | 'pending' | 'approved'>(initialTab)
   const [list, setList] = useState<BusinessTripItem[]>([])
   const [loading, setLoading] = useState(false)
@@ -77,6 +79,8 @@ export default function BusinessTripList() {
   // 切换标签
   const handleTabChange = (key: string) => {
     setActiveTab(key as 'my' | 'pending' | 'approved')
+    // 保存 tab 到 sessionStorage
+    sessionStorage.setItem('business-trip-tab', key)
     setList([])
     setHasMore(true)
     setPage(1)