diff --git a/window_scene/test/unittest/multi_user/session_manager_lite_test.cpp b/window_scene/test/unittest/multi_user/session_manager_lite_test.cpp
index a7e910c7a7591a9e388b0edb41ba2e031e2017f6..127134199b8171dfcac453eaddaea4ddff31fe68 100644
--- a/window_scene/test/unittest/multi_user/session_manager_lite_test.cpp
+++ b/window_scene/test/unittest/multi_user/session_manager_lite_test.cpp
@@ -109,14 +109,16 @@ HWTEST_F(SessionManagerLiteTest, ClearSessionManagerProxy, Function | SmallTest
  */
 HWTEST_F(SessionManagerLiteTest, OnWMSConnectionChangedCallback, Function | SmallTest | Level2)
 {
-    ASSERT_NE(nullptr, sml_);
+    auto sml = SessionManagerLite::GetInstance(-1);
+    ASSERT_NE(nullptr, sml);
     bool funcInvoked = false;
-    sml_->wmsConnectionChangedFunc_ = nullptr;
-    sml_->OnWMSConnectionChangedCallback(101, DEFAULT_SCREEN_ID, true, false);
+    sml->wmsConnectionChangedFunc_ = nullptr;
+    sml->OnWMSConnectionChangedCallback(101, DEFAULT_SCREEN_ID, true, false);
 
-    sml_->wmsConnectionChangedFunc_ = [&](int32_t userId, int32_t screenId, bool isConnected) { funcInvoked = true; };
-    sml_->OnWMSConnectionChangedCallback(101, DEFAULT_SCREEN_ID, true, true);
+    sml->wmsConnectionChangedFunc_ = [&](int32_t userId, int32_t screenId, bool isConnected) { funcInvoked = true; };
+    sml->OnWMSConnectionChangedCallback(101, DEFAULT_SCREEN_ID, true, true);
     ASSERT_EQ(funcInvoked, true);
+    sml->wmsConnectionChangedFunc_ = nullptr;
 }
 
 /**
@@ -167,16 +169,18 @@ HWTEST_F(SessionManagerLiteTest, OnWMSConnectionChanged2, Function | SmallTest |
  */
 HWTEST_F(SessionManagerLiteTest, OnUserSwitch, Function | SmallTest | Level2)
 {
-    ASSERT_NE(nullptr, sml_);
-    sml_->OnUserSwitch(nullptr);
-    ASSERT_EQ(nullptr, sml_->sessionManagerServiceProxy_);
+    auto sml = SessionManagerLite::GetInstance(-1);
+    ASSERT_NE(nullptr, sml);
+    sml->OnUserSwitch(nullptr);
+    ASSERT_EQ(nullptr, sml->sessionManagerServiceProxy_);
 
-    sml_->recoverListenerRegistered_ = true;
+    sml->recoverListenerRegistered_ = true;
     bool funInvoked = false;
-    sml_->userSwitchCallbackFunc_ = [&]() { funInvoked = true; };
-    auto sessionManagerService = sml_->GetSessionManagerServiceProxy();
-    sml_->OnUserSwitch(sessionManagerService);
+    sml->userSwitchCallbackFunc_ = [&]() { funInvoked = true; };
+    auto sessionManagerService = sml->GetSessionManagerServiceProxy();
+    sml->OnUserSwitch(sessionManagerService);
     ASSERT_EQ(funInvoked, true);
+    sml->userSwitchCallbackFunc_ = nullptr;
 }
 
 /**
diff --git a/window_scene/test/unittest/multi_user/session_manager_test.cpp b/window_scene/test/unittest/multi_user/session_manager_test.cpp
index 73cd460b161832620d78f5d717ba1e2c81f726f6..70b84c9f4265871c1e8f085e24c70f5406f79a2c 100644
--- a/window_scene/test/unittest/multi_user/session_manager_test.cpp
+++ b/window_scene/test/unittest/multi_user/session_manager_test.cpp
@@ -89,6 +89,7 @@ HWTEST_F(SessionManagerTest, OnWMSConnectionChangedCallback, Function | SmallTes
     sm->wmsConnectionChangedFunc_ = [&](int32_t userId, int32_t screenId, bool isConnected) { funcInvoked = true; };
     sm->OnWMSConnectionChangedCallback(101, DEFAULT_SCREEN_ID, true, true);
     ASSERT_EQ(funcInvoked, true);
+    sm->wmsConnectionChangedFunc_ = nullptr;
 }
 
 /**
@@ -163,6 +164,7 @@ HWTEST_F(SessionManagerTest, OnUserSwitch, Function | SmallTest | Level2)
     auto sessionManagerService = SessionManagerLite::GetInstance().GetSessionManagerServiceProxy();
     sm->OnUserSwitch(sessionManagerService);
     ASSERT_EQ(funInvoked, true);
+    sm->userSwitchCallbackFunc_ = nullptr;
 }
 
 /**