diff --git a/window_scene/screen_session_manager/include/screen_session_manager.h b/window_scene/screen_session_manager/include/screen_session_manager.h
index 968ef70311298c3c8aa2a9c5321674bd2d2a9a4e..ee6a0e337e795ad94a5f5c702b5a34cc485683eb 100644
--- a/window_scene/screen_session_manager/include/screen_session_manager.h
+++ b/window_scene/screen_session_manager/include/screen_session_manager.h
@@ -374,6 +374,7 @@ public:
     void SetDefaultScreenId(ScreenId defaultId);
     sptr<IScreenSessionManagerClient> GetClientProxy();
     void NotifyCastWhenScreenConnectChange(bool isConnected);
+    void NotifyCastWhenSwitchScbNode();
     void MultiScreenModeChange(const std::string& mainScreenId, const std::string& secondaryScreenId,
         const std::string& secondaryScreenMode);
     void SwitchScrollParam(FoldDisplayMode displayMode);
diff --git a/window_scene/screen_session_manager/src/screen_session_manager.cpp b/window_scene/screen_session_manager/src/screen_session_manager.cpp
index 9cf6ad253e16a8e756ab87200d81acdfa3501f1f..ae83c8a9bb2ce027b44575691001fc330360669b 100644
--- a/window_scene/screen_session_manager/src/screen_session_manager.cpp
+++ b/window_scene/screen_session_manager/src/screen_session_manager.cpp
@@ -7223,9 +7223,34 @@ void ScreenSessionManager::SwitchScbNodeHandle(int32_t newUserId, int32_t newScb
     currentScbPId_ = newScbPid;
     scbSwitchCV_.notify_all();
     oldScbDisplayMode_ = GetFoldDisplayMode();
+    NotifyCastWhenSwitchScbNode();
 #endif
 }
 
+void ScreenSessionManager::NotifyCastWhenSwitchScbNode()
+{
+    std::map<ScreenId, sptr<ScreenSession>> screenSessionMapCopy;
+    {
+        std::lock_guard<std::recursive_mutex> lock(screenSessionMapMutex_);
+        screenSessionMapCopy = screenSessionMap_;
+    }
+    for (const auto& sessionIt : screenSessionMapCopy) {
+        auto screenSession = sessionIt.second;
+        if (screenSession == nullptr) {
+            TLOGE(WmsLogTag::DMS, "screenSession is nullptr, screenId:%{public}" PRIu64"", sessionIt.first);
+            continue;
+        }
+        if (screenSession->GetScreenProperty().GetScreenType() != ScreenType::REAL ||
+            !IsDefaultMirrorMode(screenSession->GetScreenId())) {
+            TLOGE(WmsLogTag::DMS, "screen is not real or external, screenId:%{public}" PRIu64"", sessionIt.first);
+            continue;
+        }
+        bool isScreenMirror = screenSession ->GetScreenCombination() == ScreenCombination::SCREEN_MIRROR;
+        NotifyCastWhenScreenConnectChange(isScreenMirror);
+        return;
+    }
+}
+
 void ScreenSessionManager::HotSwitch(int32_t newUserId, int32_t newScbPid)
 {
     // hot switch
diff --git a/window_scene/test/dms_unittest/screen_session_manager_test.cpp b/window_scene/test/dms_unittest/screen_session_manager_test.cpp
index dc312192935e235d67b5902498317102418ff343..4164eeb33d3876e26730e496aa9d9e159416b378 100644
--- a/window_scene/test/dms_unittest/screen_session_manager_test.cpp
+++ b/window_scene/test/dms_unittest/screen_session_manager_test.cpp
@@ -4075,6 +4075,34 @@ HWTEST_F(ScreenSessionManagerTest, CalculateXYPosition, Function | SmallTest | L
     EXPECT_EQ(0, y);
     ssm_->DestroyVirtualScreen(screenId);
 }
+
+/**
+ * @tc.name: NotifyCastWhenSwitchScbNode
+ * @tc.desc: NotifyCastWhenSwitchScbNode
+ * @tc.type: FUNC
+ */
+HWTEST_F(ScreenSessionManagerTest, NotifyCastWhenSwitchScbNode, Function | SmallTest | Level3)
+{
+    ASSERT_NE(ssm_, nullptr);
+    sptr<IDisplayManagerAgent> displayManagerAgent = new(std::nothrow) DisplayManagerAgentDefault();
+    ASSERT_NE(displayManagerAgent, nullptr);
+
+    ScreenId id = 2;
+    sptr<ScreenSession> newSession = new (std::nothrow) ScreenSession(id, ScreenProperty(), 0);
+    newSession ->SetScreenCombination(ScreenCombination::SCREEN_MIRROR);
+    ASSERT_NE(newSession, nullptr);
+    ssm_->screenSessionMap_[id] = newSession;
+    ScreenId id1 = 3;
+    sptr<ScreenSession> newSession1 = new (std::nothrow) ScreenSession(id1, ScreenProperty(), 0);
+    newSession1 ->SetScreenCombination(ScreenCombination::SCREEN_UNIQUE);
+    ASSERT_NE(newSession1, nullptr);
+    ssm_->screenSessionMap_[id1] = newSession1;
+    ScreenId id2 = 4;
+    sptr<ScreenSession> newSession2 = nullptr;
+    ssm_->screenSessionMap_[id2] = newSession2;
+
+    ssm_->NotifyCastWhenSwitchScbNode();
+}
 }
 } // namespace Rosen
 } // namespace OHOS