diff --git a/services/devicemanagerservice/include/dependency/timer/dm_timer.h b/services/devicemanagerservice/include/dependency/timer/dm_timer.h
index 63822d47712c363efc273b90b50015c7e7d418b5..eafdd5325bf89d2226cc663441879a92f9cac5ca 100644
--- a/services/devicemanagerservice/include/dependency/timer/dm_timer.h
+++ b/services/devicemanagerservice/include/dependency/timer/dm_timer.h
@@ -37,7 +37,7 @@ public:
     bool isTrigger = false;
     std::string timerName_;
     time_t expire_;
-    TimeoutHandle mHandle_;;
+    TimeoutHandle mHandle_;
 };
 
 class TimeHeap {
diff --git a/test/unittest/UTTest_device_manager_impl.cpp b/test/unittest/UTTest_device_manager_impl.cpp
index d17c7b27aad32e65772063222d8071d34762bdd7..d8a35712d1d77dc4b09a54e086dd9e89379727c8 100644
--- a/test/unittest/UTTest_device_manager_impl.cpp
+++ b/test/unittest/UTTest_device_manager_impl.cpp
@@ -160,7 +160,7 @@ HWTEST_F(DeviceManagerImplTest, InitDeviceManager_005, testing::ext::TestSize.Le
 {
     // 1. call DeviceManagerImpl::InitDeviceManager with packName not null, dmInitCallback = nullprt
     std::string packName = "";
-    std::shared_ptr<DmInitCallbackTest> callback = std::make_shared<DmInitCallbackTest>();;
+    std::shared_ptr<DmInitCallbackTest> callback = std::make_shared<DmInitCallbackTest>();
     int32_t ret= DeviceManager::GetInstance().InitDeviceManager(packName, callback);
     // 2. check ret is DM_INVALID_VALUE
     ASSERT_EQ(ret, DM_INVALID_VALUE);
diff --git a/test/unittest/UTTest_device_manager_notify.cpp b/test/unittest/UTTest_device_manager_notify.cpp
index feaf58f96e143caf3001d4c5a6ebe9ce170cf13f..de2bd6cd4f523003d66b52260abec23c9756fcbc 100644
--- a/test/unittest/UTTest_device_manager_notify.cpp
+++ b/test/unittest/UTTest_device_manager_notify.cpp
@@ -1738,7 +1738,7 @@ HWTEST_F(DeviceManagerNotifyTest, UnRegisterPackageCallback_003, testing::ext::T
     // call checkMap2 OnDeviceFound
     checkMap2->OnDeviceFound(subscribeId, deviceInfo);
     // call checkMap3 OnAuthResult
-    std::string token ="1";;
+    std::string token ="1";
     int32_t status = 1;
     int32_t reason = 1;
     checkMap3->OnAuthResult(deviceId, token, status, reason);
diff --git a/test/unittest/UTTest_ipc_cmd_register.cpp b/test/unittest/UTTest_ipc_cmd_register.cpp
index 04e6a0b1433fe99fc7ea5ab58834748577310f18..8c029ac7bc806d880982bc909d1690a757641aa1 100644
--- a/test/unittest/UTTest_ipc_cmd_register.cpp
+++ b/test/unittest/UTTest_ipc_cmd_register.cpp
@@ -233,7 +233,7 @@ HWTEST_F(IpcCmdRegisterTest, ReadResponse_002, testing::ext::TestSize.Level0)
     std::shared_ptr<IpcRsp> rsp = std::make_shared<IpcRsp>();
     // 2. call IpcCmdRegister OnRemoteRequest with parameter
     int ret = 0;
-    ret = IpcCmdRegister::GetInstance().ReadResponse(cmdCode, reply, rsp);;
+    ret = IpcCmdRegister::GetInstance().ReadResponse(cmdCode, reply, rsp);
     // 3. check ret is DM_OK
     ASSERT_EQ(ret, DM_OK);
 }
@@ -258,7 +258,7 @@ HWTEST_F(IpcCmdRegisterTest, ReadResponse_003, testing::ext::TestSize.Level0)
     std::shared_ptr<IpcRsp> rsp = std::make_shared<IpcRsp>();
     // 2. call IpcCmdRegister OnRemoteRequest with parameter
     int ret = 0;
-    ret = IpcCmdRegister::GetInstance().ReadResponse(cmdCode, reply, rsp);;
+    ret = IpcCmdRegister::GetInstance().ReadResponse(cmdCode, reply, rsp);
     // 3. check ret is DM_OK
     ASSERT_EQ(ret, DM_OK);
 }
@@ -283,7 +283,7 @@ HWTEST_F(IpcCmdRegisterTest, ReadResponse_004, testing::ext::TestSize.Level0)
     std::shared_ptr<IpcGetTrustDeviceRsp> rsp = std::make_shared<IpcGetTrustDeviceRsp>();
     // 2. call IpcCmdRegister OnRemoteRequest with parameter
     int ret = 0;
-    ret = IpcCmdRegister::GetInstance().ReadResponse(cmdCode, reply, rsp);;
+    ret = IpcCmdRegister::GetInstance().ReadResponse(cmdCode, reply, rsp);
     // 3. check ret is DM_OK
     ASSERT_EQ(ret, DM_OK);
 }
@@ -312,7 +312,7 @@ HWTEST_F(IpcCmdRegisterTest, ReadResponse_005, testing::ext::TestSize.Level0)
     std::shared_ptr<IpcRsp> rsp = std::make_shared<IpcRsp>();
     // 2. call IpcCmdRegister OnRemoteRequest with parameter
     int ret = 0;
-    ret = IpcCmdRegister::GetInstance().ReadResponse(cmdCode, reply, rsp);;
+    ret = IpcCmdRegister::GetInstance().ReadResponse(cmdCode, reply, rsp);
     // 3. check ret is DM_IPC_TRANSACTION_FAILED
     ASSERT_EQ(ret, DM_IPC_TRANSACTION_FAILED);
 }