diff --git a/services/test/moduletest/ans_module_test.cpp b/services/test/moduletest/ans_module_test.cpp
index 1a76cf30e5f5cd9db2054f54084ed3fbffcb7bda..09bed01093f7ca00006353c7c2d2709f5598b950 100644
--- a/services/test/moduletest/ans_module_test.cpp
+++ b/services/test/moduletest/ans_module_test.cpp
@@ -522,6 +522,9 @@ HWTEST_F(AnsModuleTest, AnsModuleTest_0017, Function | SmallTest | Level1)
     g_advancedNotificationService->Publish(label, req);
     EXPECT_TRUE(passed);
     g_advancedNotificationService->Unsubscribe(subscriber->GetImpl(), subscriberInfo);
+
+    delete subscriber;
+    subscriber = nullptr;
 }
 
 /**
@@ -1115,7 +1118,7 @@ HWTEST_F(AnsModuleTest, AnsModuleTest_0051, Function | SmallTest | Level1)
     slots.push_back(slot);
     g_advancedNotificationService->AddSlots(slots);
 
-    std::vector<sptr<NotificationSlot>> slotsRef{};
+    std::vector<sptr<NotificationSlot>> slotsRe {};
     g_advancedNotificationService->GetSlots(slotsRef);
     EXPECT_EQ(1, static_cast<int>(slotsRef.size()));
     std::vector<std::string> slotsId{};
@@ -1835,6 +1838,8 @@ HWTEST_F(AnsModuleTest, AnsModuleTest_0108, Function | SmallTest | Level1)
     g_advancedNotificationService->GetActiveNotificationNums(nums);
     EXPECT_EQ(nums, 0);
     g_advancedNotificationService->Unsubscribe(subscriber->GetImpl(), subscriberInfo);
+    delete subscriber;
+    subscriber = nullptr;
 }
 
 /**