diff --git a/services/implementation/src/attest/dm_auth_attest_common.cpp b/services/implementation/src/attest/dm_auth_attest_common.cpp
index de2ad7ce777d0cb0f37adf5ce0c7ab27b4a11da8..3849cb53078e64ddd592303ef437452d39cae574 100644
--- a/services/implementation/src/attest/dm_auth_attest_common.cpp
+++ b/services/implementation/src/attest/dm_auth_attest_common.cpp
@@ -67,6 +67,7 @@ std::string AuthAttestCommon::SerializeDmCertChain(const DmCertChain *chain)
     return jsonObject.Dump();
 }
 
+//LCOV_EXCL_START
 bool ValidateInputJson(const std::string &data)
 {
     JsonObject jsonObject;
@@ -184,5 +185,6 @@ void AuthAttestCommon::FreeDmCertChain(DmCertChain &chain)
     chain.cert = nullptr;
     chain.certCount = 0;
 }
+//LCOV_EXCL_STOP
 } // namespace DistributedHardware
-} // namespace OHOS
\ No newline at end of file
+} // namespace OHOS
diff --git a/services/implementation/src/authentication_v2/dm_auth_message_processor.cpp b/services/implementation/src/authentication_v2/dm_auth_message_processor.cpp
index 792f37174c85ee900106dfd1b7fd959a209f8110..9d8cc425b7ad9e5154f860177945dec689fe7427 100644
--- a/services/implementation/src/authentication_v2/dm_auth_message_processor.cpp
+++ b/services/implementation/src/authentication_v2/dm_auth_message_processor.cpp
@@ -1043,6 +1043,7 @@ int32_t DmAuthMessageProcessor::CreateProxyCredExchangeMessage(std::shared_ptr<D
     return DM_OK;
 }
 
+//LCOV_EXCL_START
 // Create 141 message.
 int32_t DmAuthMessageProcessor::CreateMessageReqSKDerive(std::shared_ptr<DmAuthContext> context,
     JsonObject &jsonObject)
@@ -1088,6 +1089,7 @@ int32_t DmAuthMessageProcessor::CreateMessageRspSKDerive(std::shared_ptr<DmAuthC
     jsonObject[TAG_DATA] = cipherText;
     return ret;
 }
+//LCOV_EXCL_STOP
 
 // Create 160 message.
 int32_t DmAuthMessageProcessor::CreateMessageReqCredAuthStart(std::shared_ptr<DmAuthContext> context,
@@ -2282,4 +2284,4 @@ void FromJson(const JsonItemObject &itemObject, DmAccessToSync &table)
     SetValueFromJson(itemObject, "skTimeStamp", &JsonItemObject::IsNumberInteger, table.skTimeStamp);
 }
 } // namespace DistributedHardware
-} // namespace OHOS
\ No newline at end of file
+} // namespace OHOS
diff --git a/services/service/src/publishcommonevent/dm_datashare_common_event.cpp b/services/service/src/publishcommonevent/dm_datashare_common_event.cpp
index a18715aa233f84708fcedcb836b38b1a7059bac1..fbf0fc8355d20d296b125e8d1d972834f15fa8d4 100644
--- a/services/service/src/publishcommonevent/dm_datashare_common_event.cpp
+++ b/services/service/src/publishcommonevent/dm_datashare_common_event.cpp
@@ -95,6 +95,7 @@ bool DmDataShareCommonEventManager::SubscribeDataShareCommonEvent(const std::vec
     return true;
 }
 
+//LCOV_EXCL_START
 bool DmDataShareCommonEventManager::UnsubscribeDataShareCommonEvent()
 {
     std::lock_guard<std::mutex> locker(evenSubscriberMutex_);
@@ -130,6 +131,7 @@ bool DmDataShareCommonEventManager::UnsubscribeDataShareCommonEvent()
     eventValidFlag_ = false;
     return true;
 }
+//LCOV_EXCL_STOP
 
 void DmDataShareEventSubscriber::OnReceiveEvent(const CommonEventData &data)
 {