diff --git a/internal/msg_transfer/logic/online_msg_to_mongo_handler.go b/internal/msg_transfer/logic/online_msg_to_mongo_handler.go
index 58575f849..f08b59965 100644
--- a/internal/msg_transfer/logic/online_msg_to_mongo_handler.go
+++ b/internal/msg_transfer/logic/online_msg_to_mongo_handler.go
@@ -34,6 +34,7 @@ func (mc *OnlineHistoryMongoConsumerHandler) handleChatWs2Mongo(cMsg *sarama.Con
 		log.Error("msg_transfer Unmarshal msg err", "", "msg", string(msg), "err", err.Error())
 		return
 	}
+	log.Info(msgFromMQ.TriggerID, "BatchInsertChat2DB userID: ", msgFromMQ.AggregationID, "msgFromMQ.LastSeq: ", msgFromMQ.LastSeq)
 	err = db.DB.BatchInsertChat2DB(msgFromMQ.AggregationID, msgFromMQ.MessageList, msgFromMQ.TriggerID, msgFromMQ.LastSeq)
 	if err != nil {
 		log.NewError(msgFromMQ.TriggerID, "single data insert to mongo err", err.Error(), msgFromMQ.MessageList, msgFromMQ.AggregationID, msgFromMQ.TriggerID)
diff --git a/pkg/common/db/batch_insert_chat.go b/pkg/common/db/batch_insert_chat.go
index f2920813d..16096f9bb 100644
--- a/pkg/common/db/batch_insert_chat.go
+++ b/pkg/common/db/batch_insert_chat.go
@@ -26,12 +26,15 @@ func (d *DataBases) BatchInsertChat2DB(userID string, msgList []*pbMsg.MsgDataTo
 	isInit := false
 	var remain uint64
 	blk0 := uint64(GetSingleGocMsgNum() - 1)
+	//currentMaxSeq 4998
 	if currentMaxSeq < uint64(GetSingleGocMsgNum()) {
-		remain = blk0 - currentMaxSeq
+		remain = blk0 - currentMaxSeq //1
 	} else {
-		excludeBlk0 := currentMaxSeq - blk0
+		excludeBlk0 := currentMaxSeq - blk0 //=1
+		//(5000-1)%5000 == 4999
 		remain = (uint64(GetSingleGocMsgNum()) - (excludeBlk0 % uint64(GetSingleGocMsgNum()))) % uint64(GetSingleGocMsgNum())
 	}
+	//remain=1
 	insertCounter := uint64(0)
 	msgListToMongo := make([]MsgInfo, 0)
 	msgListToMongoNext := make([]MsgInfo, 0)
@@ -45,6 +48,7 @@ func (d *DataBases) BatchInsertChat2DB(userID string, msgList []*pbMsg.MsgDataTo
 		sMsg := MsgInfo{}
 		sMsg.SendTime = m.MsgData.SendTime
 		m.MsgData.Seq = uint32(currentMaxSeq)
+		log.Debug(operationID, "mongo msg node ", m.String(), m.MsgData.ClientMsgID, "userID: ", userID, "seq: ", currentMaxSeq)
 		if sMsg.Msg, err = proto.Marshal(m.MsgData); err != nil {
 			return utils.Wrap(err, "")
 		}
@@ -58,11 +62,11 @@ func (d *DataBases) BatchInsertChat2DB(userID string, msgList []*pbMsg.MsgDataTo
 			msgListToMongo = append(msgListToMongo, sMsg)
 			insertCounter++
 			seqUid = getSeqUid(userID, uint32(currentMaxSeq))
-			log.Debug(operationID, "msgListToMongo ", seqUid, m.MsgData.Seq, m.MsgData.ClientMsgID, insertCounter, remain)
+			log.Debug(operationID, "msgListToMongo ", seqUid, m.MsgData.Seq, m.MsgData.ClientMsgID, insertCounter, remain, "userID: ", userID)
 		} else {
 			msgListToMongoNext = append(msgListToMongoNext, sMsg)
 			seqUidNext = getSeqUid(userID, uint32(currentMaxSeq))
-			log.Debug(operationID, "msgListToMongoNext ", seqUidNext, m.MsgData.Seq, m.MsgData.ClientMsgID, insertCounter, remain)
+			log.Debug(operationID, "msgListToMongoNext ", seqUidNext, m.MsgData.Seq, m.MsgData.ClientMsgID, insertCounter, remain, "userID: ", userID)
 		}
 	}
 
@@ -71,7 +75,7 @@ func (d *DataBases) BatchInsertChat2DB(userID string, msgList []*pbMsg.MsgDataTo
 
 	if seqUid != "" {
 		filter := bson.M{"uid": seqUid}
-		log.NewDebug(operationID, "filter ", seqUid, "list ", msgListToMongo)
+		log.NewDebug(operationID, "filter ", seqUid, "list ", msgListToMongo, "userID: ", userID)
 		err := c.FindOneAndUpdate(ctx, filter, bson.M{"$push": bson.M{"msg": bson.M{"$each": msgListToMongo}}}).Err()
 		if err != nil {
 			if err == mongo.ErrNoDocuments {
@@ -95,7 +99,7 @@ func (d *DataBases) BatchInsertChat2DB(userID string, msgList []*pbMsg.MsgDataTo
 		sChat := UserChat{}
 		sChat.UID = seqUidNext
 		sChat.Msg = msgListToMongoNext
-		log.NewDebug(operationID, "filter ", seqUidNext, "list ", msgListToMongoNext)
+		log.NewDebug(operationID, "filter ", seqUidNext, "list ", msgListToMongoNext, "userID: ", userID)
 		if _, err = c.InsertOne(ctx, &sChat); err != nil {
 			log.NewError(operationID, "InsertOne failed", filter, err.Error(), sChat)
 			return utils.Wrap(err, "")
@@ -119,8 +123,10 @@ func (d *DataBases) BatchInsertChat2Cache(insertID string, msgList []*pbMsg.MsgD
 	var err error
 	if msgList[0].MsgData.SessionType == constant.SuperGroupChatType {
 		currentMaxSeq, err = d.GetGroupMaxSeq(insertID)
+		log.Debug(operationID, "constant.SuperGroupChatType  lastMaxSeq before add ", currentMaxSeq, "userID ", insertID, err)
 	} else {
 		currentMaxSeq, err = d.GetUserMaxSeq(insertID)
+		log.Debug(operationID, "constant.SingleChatType  lastMaxSeq before add ", currentMaxSeq, "userID ", insertID, err)
 	}
 	if err != nil && err != go_redis.Nil {
 		return utils.Wrap(err, ""), 0
@@ -128,11 +134,12 @@ func (d *DataBases) BatchInsertChat2Cache(insertID string, msgList []*pbMsg.MsgD
 
 	lastMaxSeq := currentMaxSeq
 	for _, m := range msgList {
-		log.Debug(operationID, "msg node ", m.String(), m.MsgData.ClientMsgID)
+
 		currentMaxSeq++
 		sMsg := MsgInfo{}
 		sMsg.SendTime = m.MsgData.SendTime
 		m.MsgData.Seq = uint32(currentMaxSeq)
+		log.Debug(operationID, "cache msg node ", m.String(), m.MsgData.ClientMsgID, "userID: ", insertID, "seq: ", currentMaxSeq)
 	}
 	log.Debug(operationID, "SetMessageToCache ", insertID, len(msgList))
 	err = d.SetMessageToCache(msgList, insertID, operationID)