diff --git a/keyBoard/Class/Base/V/KBCustomTabBar.m b/keyBoard/Class/Base/V/KBCustomTabBar.m
index 1618d44..43c7964 100644
--- a/keyBoard/Class/Base/V/KBCustomTabBar.m
+++ b/keyBoard/Class/Base/V/KBCustomTabBar.m
@@ -99,9 +99,8 @@
 - (void)buttonTapped:(UIButton *)button {
   NSInteger index = button.tag;
   if (index != self.selectedIndex) {
-    self.selectedIndex = index;
-    [self updateButtonStates];
-
+    // 先通知 delegate，由 delegate 决定是否允许切换（如登录拦截）
+    // delegate 允许时会主动调用 setSelectedIndex: 来更新状态
     if ([self.delegate respondsToSelector:@selector(customTabBar:
                                               didSelectItemAtIndex:)]) {
       [self.delegate customTabBar:self didSelectItemAtIndex:index];
diff --git a/keyBoard/Class/Base/VC/BaseTabBarController.m b/keyBoard/Class/Base/VC/BaseTabBarController.m
index 2deaaec..a958b9d 100644
--- a/keyBoard/Class/Base/VC/BaseTabBarController.m
+++ b/keyBoard/Class/Base/VC/BaseTabBarController.m
@@ -154,12 +154,15 @@
 
 - (void)customTabBar:(KBCustomTabBar *)tabBar
     didSelectItemAtIndex:(NSInteger)index {
-  // 登录检查
+  // 登录检查：未登录时跳登录页，不切换 Tab，不更新选中状态
   if ((index == 1 || index == 2 || index == 3) && ![KBUserSessionManager shared].isLoggedIn) {
     [[KBUserSessionManager shared] goLoginVC];
     return;
   }
 
+  // 更新自定义 TabBar 的选中状态
+  [self.customTabBar setSelectedIndex:index];
+
   // 切换 VC
   self.selectedIndex = index;