diff --git a/frameworks/libs/distributeddb/test/unittest/common/syncer/distributeddb_mock_sync_module_test.cpp b/frameworks/libs/distributeddb/test/unittest/common/syncer/distributeddb_mock_sync_module_test.cpp
index 2a7ed22968b449f7a15fae136b1a8e27630a017d..e344596de3d37b023b7692f20982f1b10080014d 100644
--- a/frameworks/libs/distributeddb/test/unittest/common/syncer/distributeddb_mock_sync_module_test.cpp
+++ b/frameworks/libs/distributeddb/test/unittest/common/syncer/distributeddb_mock_sync_module_test.cpp
@@ -386,16 +386,17 @@ void TimeSync001()
     EXPECT_CALL(*communicator, SendMessage(_, _, _, _)).WillRepeatedly(Return(DB_ERROR));
     const int loopCount = 100;
     const int timeDriverMs = 200;
+    std::shared_ptr <MockTimeSync> timeSync = std::make_shared<MockTimeSync>();
     for (int i = 0; i < loopCount; ++i) {
-        MockTimeSync timeSync;
-        EXPECT_EQ(timeSync.Initialize(communicator, metadata, storage, "DEVICES_A", ""), E_OK);
-        EXPECT_CALL(timeSync, SyncStart).WillRepeatedly(Return(E_OK));
-        timeSync.ModifyTimer(timeDriverMs);
+        EXPECT_EQ(timeSync->Initialize(communicator, metadata, storage, "DEVICES_A", ""), E_OK);
+        EXPECT_CALL(*timeSync, SyncStart(_, _, _)).WillRepeatedly(Return(E_OK));
+        timeSync->ModifyTimer(timeDriverMs);
         std::this_thread::sleep_for(std::chrono::milliseconds(timeDriverMs));
-        timeSync.Close();
+        timeSync->Close();
     }
     std::this_thread::sleep_for(std::chrono::seconds(1));
     metadata = nullptr;
+    timeSync = nullptr;
     delete storage;
     delete communicator;
 }