diff --git a/services/dfx/src/inputmethod_sysevent.cpp b/services/dfx/src/inputmethod_sysevent.cpp
index 2a4aff06..8b96b095 100644
--- a/services/dfx/src/inputmethod_sysevent.cpp
+++ b/services/dfx/src/inputmethod_sysevent.cpp
@@ -23,7 +23,6 @@ namespace OHOS {
 namespace MiscServices {
 namespace {
 using HiSysEventNameSpace = OHOS::HiviewDFX::HiSysEvent;
-const std::string DOMAIN_STR = std::string(HiSysEventNameSpace::Domain::INPUTMETHOD);
 } // namespace
 
 const std::map<int32_t, std::string> InputmethodSysevent::oprateInfo_ = {
@@ -40,7 +39,7 @@ const std::map<int32_t, std::string> InputmethodSysevent::oprateInfo_ = {
 
 void InputmethodSysevent::FaultReporter(int32_t userId, std::string bundleName, int32_t errCode)
 {
-    int32_t ret = HiSysEventWrite(DOMAIN_STR, "SERVICE_INIT_FAILED", HiSysEventNameSpace::EventType::FAULT, "USER_ID",
+    int32_t ret = HiSysEventWrite(HiSysEventNameSpace::Domain::INPUTMETHOD, "SERVICE_INIT_FAILED", HiSysEventNameSpace::EventType::FAULT, "USER_ID",
         userId, "COMPONENT_ID", bundleName, "ERROR_CODE", errCode);
     if (ret != 0) {
         IMSA_HILOGE("hisysevent FaultReporter failed! ret %{public}d,errCode %{public}d", ret, errCode);
@@ -49,7 +48,7 @@ void InputmethodSysevent::FaultReporter(int32_t userId, std::string bundleName,
 
 void InputmethodSysevent::CreateComponentFailed(int32_t userId, int32_t errCode)
 {
-    int32_t ret = HiSysEventWrite(DOMAIN_STR, "CREATE_COMPONENT_FAILED", HiSysEventNameSpace::EventType::FAULT,
+    int32_t ret = HiSysEventWrite(HiSysEventNameSpace::Domain::INPUTMETHOD, "CREATE_COMPONENT_FAILED", HiSysEventNameSpace::EventType::FAULT,
         "USER_ID", userId, "ERROR_CODE", errCode);
     if (ret != 0) {
         IMSA_HILOGE("hisysevent CreateComponentFailed failed! ret %{public}d,errCode %{public}d", ret, errCode);
@@ -58,7 +57,7 @@ void InputmethodSysevent::CreateComponentFailed(int32_t userId, int32_t errCode)
 
 void InputmethodSysevent::BehaviourReporter(std::string ActiveName, const std::string &inputmethodName)
 {
-    int32_t ret = HiSysEventWrite(DOMAIN_STR, "INPUTMETHOD_USING", HiSysEventNameSpace::EventType::BEHAVIOR,
+    int32_t ret = HiSysEventWrite(HiSysEventNameSpace::Domain::INPUTMETHOD, "INPUTMETHOD_USING", HiSysEventNameSpace::EventType::BEHAVIOR,
         "ACTIVE_NAME", ActiveName, "INPUTMETHOD_NAME", inputmethodName);
     if (ret != HiviewDFX::SUCCESS) {
         IMSA_HILOGE("hisysevent BehaviourReporter failed! ret %{public}d", ret);
@@ -67,7 +66,7 @@ void InputmethodSysevent::BehaviourReporter(std::string ActiveName, const std::s
 
 void InputmethodSysevent::OperateSoftkeyboardBehaviour(OperateIMEInfoCode infoCode)
 {
-    int32_t ret = HiSysEventWrite(DOMAIN_STR, "OPERATE_SOFTKEYBOARD", HiSysEventNameSpace::EventType::BEHAVIOR,
+    int32_t ret = HiSysEventWrite(HiSysEventNameSpace::Domain::INPUTMETHOD, "OPERATE_SOFTKEYBOARD", HiSysEventNameSpace::EventType::BEHAVIOR,
         "OPERATING", GetOperateAction(infoCode), "OPERATE_INFO", GetOperateInfo(infoCode));
     if (ret != HiviewDFX::SUCCESS) {
         IMSA_HILOGE("hisysevent BehaviourReporter failed! ret %{public}d", ret);