diff --git a/cmd/open_im_cron_task/main.go b/cmd/open_im_cron_task/main.go
index 30ed7aea7..a3cb60a25 100644
--- a/cmd/open_im_cron_task/main.go
+++ b/cmd/open_im_cron_task/main.go
@@ -2,11 +2,15 @@ package main
 
 import (
 	"Open_IM/internal/cron_task"
+	"flag"
 	"fmt"
 	"time"
 )
 
 func main() {
-	fmt.Println(time.Now(), "start cronTask")
-	cronTask.StartCronTask()
+	var userID = flag.String("userID", "", "userID to clear msg and reset seq")
+	var workingGroupID = flag.String("workingGroupID", "", "workingGroupID to clear msg and reset seq")
+	flag.Parse()
+	fmt.Println(time.Now(), "start cronTask", userID, workingGroupID)
+	cronTask.StartCronTask(*userID, *workingGroupID)
 }
diff --git a/internal/cron_task/clear_msg.go b/internal/cron_task/clear_msg.go
index 1db1c0b6c..f752d3f59 100644
--- a/internal/cron_task/clear_msg.go
+++ b/internal/cron_task/clear_msg.go
@@ -139,6 +139,7 @@ func deleteMongoMsg(operationID string, ID string, index int64, delStruct *delMs
 	}
 	delStruct.minSeq = lastMsgPb.Seq
 	if msgListIsFull(msgs) {
+		log.NewDebug(operationID, "msg list is full", msgs.UID)
 		delStruct.delUidList = append(delStruct.delUidList, msgs.UID)
 	}
 	log.NewDebug(operationID, ID, "continue", delStruct)
diff --git a/internal/cron_task/cron_task.go b/internal/cron_task/cron_task.go
index 87c2fbb46..1fdef997e 100644
--- a/internal/cron_task/cron_task.go
+++ b/internal/cron_task/cron_task.go
@@ -14,60 +14,31 @@ import (
 
 const cronTaskOperationID = "cronTaskOperationID-"
 
-func StartCronTask() {
+func StartCronTask(userID, workingGroupID string) {
 	log.NewPrivateLog("cron")
 	log.NewInfo(utils.OperationIDGenerator(), "start cron task", "cron config", config.Config.Mongo.ChatRecordsClearTime)
-	c := cron.New()
 	fmt.Println("cron config", config.Config.Mongo.ChatRecordsClearTime)
-	_, err := c.AddFunc(config.Config.Mongo.ChatRecordsClearTime, func() {
-		// user msg clear
+	if userID != "" {
 		operationID := getCronTaskOperationID()
-		log.NewInfo(operationID, "====================== start del cron task ======================")
-		userIDList, err := im_mysql_model.SelectAllUserID()
-		if err == nil {
-			log.NewDebug(operationID, utils.GetSelfFuncName(), "userIDList: ", userIDList)
-			userIDList = []string{"4158779020"}
-			for _, userID := range userIDList {
-				if err := DeleteMongoMsgAndResetRedisSeq(operationID, userID); err != nil {
-					log.NewError(operationID, utils.GetSelfFuncName(), err.Error(), userID)
-				}
-				if err := checkMaxSeqWithMongo(operationID, userID, constant.WriteDiffusion); err != nil {
-					log.NewError(operationID, utils.GetSelfFuncName(), userID, err)
-				}
-			}
-		} else {
-			log.NewError(operationID, utils.GetSelfFuncName(), err.Error())
-		}
-		//return
-		// working group msg clear
-		workingGroupIDList, err := im_mysql_model.GetGroupIDListByGroupType(constant.WorkingGroup)
-		if err == nil {
-			log.NewDebug(operationID, utils.GetSelfFuncName(), "workingGroupIDList: ", workingGroupIDList)
-			for _, groupID := range workingGroupIDList {
-				userIDList, err = rocksCache.GetGroupMemberIDListFromCache(groupID)
-				if err != nil {
-					log.NewError(operationID, utils.GetSelfFuncName(), err.Error(), groupID)
-					continue
-				}
-				log.NewDebug(operationID, utils.GetSelfFuncName(), "groupID:", groupID, "userIDList:", userIDList)
-				if err := ResetUserGroupMinSeq(operationID, groupID, userIDList); err != nil {
-					log.NewError(operationID, utils.GetSelfFuncName(), err.Error(), groupID, userIDList)
-				}
-				if err := checkMaxSeqWithMongo(operationID, groupID, constant.ReadDiffusion); err != nil {
-					log.NewError(operationID, utils.GetSelfFuncName(), groupID, err)
-				}
-			}
-		} else {
-			log.NewError(operationID, utils.GetSelfFuncName(), err.Error())
-		}
-
-		log.NewInfo(operationID, "====================== start del cron finished ======================")
-	})
+		StartClearMsg(operationID, []string{userID})
+	}
+	if workingGroupID != "" {
+		operationID := getCronTaskOperationID()
+		StartClearWorkingGroupMsg(operationID, []string{workingGroupID})
+	}
+	if userID != "" || workingGroupID != "" {
+		fmt.Println("clear msg finished")
+		return
+	}
+	clearFunc := func() {
+		ClearAll()
+	}
+	c := cron.New()
+	_, err := c.AddFunc(config.Config.Mongo.ChatRecordsClearTime, clearFunc)
 	if err != nil {
 		fmt.Println("start cron failed", err.Error(), config.Config.Mongo.ChatRecordsClearTime)
 		panic(err)
 	}
-
 	c.Start()
 	fmt.Println("start cron task success")
 	for {
@@ -78,3 +49,56 @@ func StartCronTask() {
 func getCronTaskOperationID() string {
 	return cronTaskOperationID + utils.OperationIDGenerator()
 }
+
+func ClearAll() {
+	operationID := getCronTaskOperationID()
+	log.NewInfo(operationID, "====================== start del cron task ======================")
+	//var userIDList []string
+	var err error
+	userIDList, err := im_mysql_model.SelectAllUserID()
+	if err == nil {
+		StartClearMsg(operationID, userIDList)
+	} else {
+		log.NewError(operationID, utils.GetSelfFuncName(), err.Error())
+	}
+	//return
+	// working group msg clear
+	workingGroupIDList, err := im_mysql_model.GetGroupIDListByGroupType(constant.WorkingGroup)
+	if err == nil {
+		StartClearWorkingGroupMsg(operationID, workingGroupIDList)
+	} else {
+		log.NewError(operationID, utils.GetSelfFuncName(), err.Error())
+	}
+
+	log.NewInfo(operationID, "====================== start del cron finished ======================")
+}
+
+func StartClearMsg(operationID string, userIDList []string) {
+	log.NewDebug(operationID, utils.GetSelfFuncName(), "userIDList: ", userIDList)
+	for _, userID := range userIDList {
+		if err := DeleteMongoMsgAndResetRedisSeq(operationID, userID); err != nil {
+			log.NewError(operationID, utils.GetSelfFuncName(), err.Error(), userID)
+		}
+		if err := checkMaxSeqWithMongo(operationID, userID, constant.WriteDiffusion); err != nil {
+			log.NewError(operationID, utils.GetSelfFuncName(), userID, err)
+		}
+	}
+}
+
+func StartClearWorkingGroupMsg(operationID string, workingGroupIDList []string) {
+	log.NewDebug(operationID, utils.GetSelfFuncName(), "workingGroupIDList: ", workingGroupIDList)
+	for _, groupID := range workingGroupIDList {
+		userIDList, err := rocksCache.GetGroupMemberIDListFromCache(groupID)
+		if err != nil {
+			log.NewError(operationID, utils.GetSelfFuncName(), err.Error(), groupID)
+			continue
+		}
+		log.NewDebug(operationID, utils.GetSelfFuncName(), "groupID:", groupID, "workingGroupIDList:", userIDList)
+		if err := ResetUserGroupMinSeq(operationID, groupID, userIDList); err != nil {
+			log.NewError(operationID, utils.GetSelfFuncName(), err.Error(), groupID, userIDList)
+		}
+		if err := checkMaxSeqWithMongo(operationID, groupID, constant.ReadDiffusion); err != nil {
+			log.NewError(operationID, utils.GetSelfFuncName(), groupID, err)
+		}
+	}
+}