diff --git a/lib/pages/terminal/view.dart b/lib/pages/terminal/view.dart
index c15a705..e215750 100644
--- a/lib/pages/terminal/view.dart
+++ b/lib/pages/terminal/view.dart
@@ -39,12 +39,18 @@ class _TerminalPageState extends State<TerminalPage> {
   Timer? _routeLoadingTimer;
   bool _routeLoading = false;
   bool _menuSyncScheduled = false;
+  bool _routeStateSyncScheduled = false;
+  String? _pendingRouteName;
 
   @override
   void initState() {
     super.initState();
     _menuController = Get.find<TerminalMenuControl>();
-    _initialRoute = _routeForSoleVisibleMenu() ?? RouteNames.cashier;
+    final soleVisibleRoute = _routeForSoleVisibleMenu();
+    // 设置页必须继续经过管理密码校验，不能因为它恰好是唯一菜单就在初始化路由中绕过守卫。
+    _initialRoute = soleVisibleRoute == RouteNames.setting
+        ? RouteNames.cashier
+        : soleVisibleRoute ?? RouteNames.cashier;
     _currentConfig = _terminalRoutes[_initialRoute]!;
     _menuWorker = everAll(
       [_menuController.menuOrder, _menuController.hiddenMenus],
@@ -73,6 +79,11 @@ class _TerminalPageState extends State<TerminalPage> {
             child: Navigator(
               key: Get.nestedKey(TerminalNavigationTool.navigatorId),
               initialRoute: _initialRoute,
+              // 内层路由名称包含 /terminal 前缀，默认生成逻辑会额外创建 / 和
+              // /terminal 中间路由；这里只创建目标页，避免误装载收银页及其 Binding。
+              onGenerateInitialRoutes: (_, initialRoute) => [
+                _generateRoute(RouteSettings(name: initialRoute)),
+              ],
               observers: [_TerminalRouteObserver(_handleRouteChanged)],
               onGenerateRoute: _generateRoute,
             ),
@@ -111,21 +122,36 @@ class _TerminalPageState extends State<TerminalPage> {
       if (route == null || route == _currentConfig.name) return;
 
       // 配置收敛到单入口后直接切换工作区，避免侧栏收起时仍停留在已隐藏页面。
-      TerminalNavigationTool.replaceWorkspace(route);
+      if (route == RouteNames.setting) {
+        unawaited(TerminalNavigationTool.open(route));
+      } else {
+        TerminalNavigationTool.replaceWorkspace(route);
+      }
     });
   }
 
   void _handleRouteChanged(String? routeName) {
-    final config = _terminalRoutes[routeName];
-    if (config == null || config == _currentConfig || !mounted) return;
-    _routeLoadingTimer?.cancel();
-    setState(() {
-      _currentConfig = config;
-      _routeLoading = true;
-    });
-    // Loading 只遮住二级路由重建的短暂帧，页面自己的接口加载状态仍由 Controller 负责。
-    _routeLoadingTimer = Timer(const Duration(milliseconds: 180), () {
-      if (mounted) setState(() => _routeLoading = false);
+    if (routeName == null || !_terminalRoutes.containsKey(routeName)) return;
+    _pendingRouteName = routeName;
+    if (_routeStateSyncScheduled) return;
+    _routeStateSyncScheduled = true;
+    // Navigator 会在自身构建和历史栈刷新期间通知 Observer，父页面状态必须延后更新。
+    WidgetsBinding.instance.addPostFrameCallback((_) {
+      _routeStateSyncScheduled = false;
+      if (!mounted) return;
+      final pendingRouteName = _pendingRouteName;
+      _pendingRouteName = null;
+      final config = _terminalRoutes[pendingRouteName];
+      if (config == null || config == _currentConfig) return;
+      _routeLoadingTimer?.cancel();
+      setState(() {
+        _currentConfig = config;
+        _routeLoading = true;
+      });
+      // Loading 只遮住二级路由重建的短暂帧，页面自己的接口加载状态仍由 Controller 负责。
+      _routeLoadingTimer = Timer(const Duration(milliseconds: 180), () {
+        if (mounted) setState(() => _routeLoading = false);
+      });
     });
   }
 }