diff --git a/common/include/dm_constants.h b/common/include/dm_constants.h
index 5db4967a..34c6998a 100755
--- a/common/include/dm_constants.h
+++ b/common/include/dm_constants.h
@@ -196,6 +196,14 @@ const std::string EVENT_INIT_CODE = "2";
 
 // timer
 const std::string TIMER_PREFIX = "deviceManagerTimer:";
+const std::string AUTHENTICATE_TIMEOUT_TASK = TIMER_PREFIX + "authenticate";
+const std::string NEGOTIATE_TIMEOUT_TASK = TIMER_PREFIX + "negotiate";
+const std::string CONFIRM_TIMEOUT_TASK = TIMER_PREFIX + "confirm";
+const std::string SHOW_TIMEOUT_TASK = TIMER_PREFIX + "show";
+const std::string INPUT_TIMEOUT_TASK = TIMER_PREFIX + "input";
+const std::string ADD_TIMEOUT_TASK = TIMER_PREFIX + "add";
+const std::string WAIT_NEGOTIATE_TIMEOUT_TASK = TIMER_PREFIX + "waitNegotiate";
+const std::string WAIT_REQUEST_TIMEOUT_TASK = TIMER_PREFIX + "waitRequest";
 const std::string STATE_TIMER_PREFIX = "stateTimer_";
 const int32_t TIMER_PREFIX_LENGTH = 19;
 const int32_t TIMER_DEFAULT = 0;
diff --git a/services/devicemanagerservice/src/authentication/dm_auth_manager.cpp b/services/devicemanagerservice/src/authentication/dm_auth_manager.cpp
index ca27aba5..0b26255b 100644
--- a/services/devicemanagerservice/src/authentication/dm_auth_manager.cpp
+++ b/services/devicemanagerservice/src/authentication/dm_auth_manager.cpp
@@ -35,15 +35,6 @@
 
 namespace OHOS {
 namespace DistributedHardware {
-const std::string AUTHENTICATE_TIMEOUT_TASK = TIMER_PREFIX + "authenticate";
-const std::string NEGOTIATE_TIMEOUT_TASK = TIMER_PREFIX + "negotiate";
-const std::string CONFIRM_TIMEOUT_TASK = TIMER_PREFIX + "confirm";
-const std::string SHOW_TIMEOUT_TASK = TIMER_PREFIX + "show";
-const std::string INPUT_TIMEOUT_TASK = TIMER_PREFIX + "input";
-const std::string ADD_TIMEOUT_TASK = TIMER_PREFIX + "add";
-const std::string WAIT_NEGOTIATE_TIMEOUT_TASK = TIMER_PREFIX + "waitNegotiate";
-const std::string WAIT_REQUEST_TIMEOUT_TASK = TIMER_PREFIX + "waitRequest";
-
 const int32_t SESSION_CANCEL_TIMEOUT = 0;
 const int32_t AUTHENTICATE_TIMEOUT = 120;
 const int32_t CONFIRM_TIMEOUT = 60;
diff --git a/test/unittest/UTTest_auth_request_state.cpp b/test/unittest/UTTest_auth_request_state.cpp
index 98a113df..c20d087e 100644
--- a/test/unittest/UTTest_auth_request_state.cpp
+++ b/test/unittest/UTTest_auth_request_state.cpp
@@ -35,9 +35,6 @@ void AuthRequestStateTest::TearDownTestCase()
 }
 
 namespace {
-std::string AUTHENTICATE_TIMEOUT_TASK = "authenticateTimeoutTask";
-std::string NEGOTIATE_TIMEOUT_TASK = "negotiateTimeoutTask";
-std::string CONFIRM_TIMEOUT_TASK = "confirmTimeoutTask";
 std::string INPUT_TIMEOUT_TASK = "inputTimeoutTask";
 std::string ADD_TIMEOUT_TASK = "addTimeoutTask";
 
diff --git a/test/unittest/UTTest_device_manager_service.cpp b/test/unittest/UTTest_device_manager_service.cpp
index a7e692a3..88f09281 100644
--- a/test/unittest/UTTest_device_manager_service.cpp
+++ b/test/unittest/UTTest_device_manager_service.cpp
@@ -40,8 +40,6 @@ void DeviceManagerServiceTest::TearDownTestCase()
 }
 
 namespace {
-std::string INPUT_TIMEOUT_TASK = "inputTimeoutTask";
-
 /**
  * @tc.name: StartDeviceDiscovery_001
  * @tc.desc: Set StartDeviceDiscovery's flag bit intFlag_ to False and return DM_NOT_INIT
diff --git a/test/unittest/UTTest_dm_auth_manager.cpp b/test/unittest/UTTest_dm_auth_manager.cpp
index e95bc93f..4250b6f2 100644
--- a/test/unittest/UTTest_dm_auth_manager.cpp
+++ b/test/unittest/UTTest_dm_auth_manager.cpp
@@ -38,12 +38,6 @@ void DmAuthManagerTest::TearDownTestCase()
 }
 
 namespace {
-std::string AUTHENTICATE_TIMEOUT_TASK = "authenticateTimeoutTask";
-std::string NEGOTIATE_TIMEOUT_TASK = "negotiateTimeoutTask";
-std::string CONFIRM_TIMEOUT_TASK = "confirmTimeoutTask";
-std::string INPUT_TIMEOUT_TASK = "inputTimeoutTask";
-std::string ADD_TIMEOUT_TASK = "addTimeoutTask";
-
 std::shared_ptr<SoftbusConnector> softbusConnector = std::make_shared<SoftbusConnector>();
 std::shared_ptr<DeviceManagerServiceListener> listener = std::make_shared<DeviceManagerServiceListener>();
 std::shared_ptr<HiChainConnector> hiChainConnector_ = std::make_shared<HiChainConnector>();