diff --git a/internal/msg_transfer/logic/init.go b/internal/msg_transfer/logic/init.go
index c382de7f0..8f5cc0695 100644
--- a/internal/msg_transfer/logic/init.go
+++ b/internal/msg_transfer/logic/init.go
@@ -24,6 +24,8 @@ var (
 	singleMsgSuccessCount uint64
 	groupMsgCount         uint64
 	singleMsgFailedCount  uint64
+
+	singleMsgSuccessCountMutex sync.Mutex
 )
 
 func Init() {
diff --git a/internal/msg_transfer/logic/offline_history_msg_handler.go b/internal/msg_transfer/logic/offline_history_msg_handler.go
index 13d168ddb..876beb30e 100644
--- a/internal/msg_transfer/logic/offline_history_msg_handler.go
+++ b/internal/msg_transfer/logic/offline_history_msg_handler.go
@@ -53,7 +53,9 @@ func (mc *OfflineHistoryConsumerHandler) handleChatWs2Mongo(msg []byte, msgKey s
 				log.NewError(operationID, "single data insert to mongo err", err.Error(), msgFromMQ.String())
 				return
 			}
+			singleMsgSuccessCountMutex.Lock()
 			singleMsgSuccessCount++
+			singleMsgSuccessCountMutex.Unlock()
 			log.NewDebug(msgFromMQ.OperationID, "sendMessageToPush cost time ", time.Since(now))
 		}
 		if !isSenderSync && msgKey == msgFromMQ.MsgData.SendID {
diff --git a/internal/msg_transfer/logic/online_history_msg_handler.go b/internal/msg_transfer/logic/online_history_msg_handler.go
index 43bd240c4..dd1f22634 100644
--- a/internal/msg_transfer/logic/online_history_msg_handler.go
+++ b/internal/msg_transfer/logic/online_history_msg_handler.go
@@ -86,7 +86,9 @@ func (och *OnlineHistoryConsumerHandler) handleChatWs2Mongo(msg []byte, msgKey s
 				log.NewError(operationID, "single data insert to mongo err", err.Error(), msgFromMQ.String())
 				return
 			}
+			singleMsgSuccessCountMutex.Lock()
 			singleMsgSuccessCount++
+			singleMsgSuccessCountMutex.Unlock()
 			log.NewDebug(msgFromMQ.OperationID, "sendMessageToPush cost time ", time.Since(now))
 		}
 		if !isSenderSync && msgKey == msgFromMQ.MsgData.SendID {