diff --git a/cmd/open_im_cron_task/main.go b/cmd/open_im_cron_task/main.go
index 1e7396d61..30ed7aea7 100644
--- a/cmd/open_im_cron_task/main.go
+++ b/cmd/open_im_cron_task/main.go
@@ -3,9 +3,10 @@ package main
 import (
 	"Open_IM/internal/cron_task"
 	"fmt"
+	"time"
 )
 
 func main() {
-	fmt.Println("start cronTask")
+	fmt.Println(time.Now(), "start cronTask")
 	cronTask.StartCronTask()
 }
diff --git a/internal/cron_task/clear_msg_test.go b/internal/cron_task/clear_msg_test.go
index b1621c26d..046af9162 100644
--- a/internal/cron_task/clear_msg_test.go
+++ b/internal/cron_task/clear_msg_test.go
@@ -2,14 +2,68 @@ package cronTask
 
 import (
 	"Open_IM/pkg/common/constant"
+	"Open_IM/pkg/common/db"
 	"Open_IM/pkg/common/log"
+	pbMsg "Open_IM/pkg/proto/msg"
+	server_api_params "Open_IM/pkg/proto/sdk_ws"
 	"Open_IM/pkg/utils"
 	"testing"
+	"time"
 )
 
+func getMsgListFake(num int) []*pbMsg.MsgDataToMQ {
+	var msgList []*pbMsg.MsgDataToMQ
+	for i := 1; i < num; i++ {
+		msgList = append(msgList, &pbMsg.MsgDataToMQ{
+			Token:       "tk",
+			OperationID: "operationID",
+			MsgData: &server_api_params.MsgData{
+				SendID:           "sendID1",
+				RecvID:           "recvID1",
+				GroupID:          "",
+				ClientMsgID:      "xxx",
+				ServerMsgID:      "xxx",
+				SenderPlatformID: 1,
+				SenderNickname:   "testNickName",
+				SenderFaceURL:    "testFaceURL",
+				SessionType:      1,
+				MsgFrom:          100,
+				ContentType:      101,
+				Content:          []byte("testFaceURL"),
+				Seq:              uint32(i),
+				SendTime:         time.Now().Unix(),
+				CreateTime:       time.Now().Unix(),
+				Status:           1,
+			},
+		})
+	}
+}
+
 func TestDeleteMongoMsgAndResetRedisSeq(t *testing.T) {
 	operationID := getCronTaskOperationID()
-	testUserIDList := []string{"test_del_id1", "test_del_id2", "test_del_id3", "test_del_id4", "test_del_id5"}
+	testUID1 := "test_del_id1"
+	//testUID2 := "test_del_id2"
+	//testUID3 := "test_del_id3"
+	//testUID4 := "test_del_id4"
+	//testUID5 := "test_del_id5"
+	//testUID6 := "test_del_id6"
+	testUserIDList := []string{testUID1}
+
+	db.DB.SetUserMaxSeq(testUID1, 500)
+	db.DB.BatchInsertChat2DB(testUID1, getMsgListFake(500), testUID1+"-"+operationID, 500)
+
+	//db.DB.SetUserMaxSeq(testUID1, 6000)
+	//db.DB.BatchInsertChat2DB()
+	//
+	//db.DB.SetUserMaxSeq(testUID1, 4999)
+	//db.DB.BatchInsertChat2DB()
+	//
+	//db.DB.SetUserMaxSeq(testUID1, 30000)
+	//db.DB.BatchInsertChat2DB()
+	//
+	//db.DB.SetUserMaxSeq(testUID1, 9999)
+	//db.DB.BatchInsertChat2DB()
+
 	for _, userID := range testUserIDList {
 		operationID = userID + "-" + operationID
 		if err := DeleteMongoMsgAndResetRedisSeq(operationID, userID); err != nil {
diff --git a/internal/cron_task/cron_task.go b/internal/cron_task/cron_task.go
index b493b1f37..87c2fbb46 100644
--- a/internal/cron_task/cron_task.go
+++ b/internal/cron_task/cron_task.go
@@ -31,14 +31,14 @@ func StartCronTask() {
 				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)
-				//}
+				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
+		//return
 		// working group msg clear
 		workingGroupIDList, err := im_mysql_model.GetGroupIDListByGroupType(constant.WorkingGroup)
 		if err == nil {
@@ -53,9 +53,9 @@ func StartCronTask() {
 				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)
-				//}
+				if err := checkMaxSeqWithMongo(operationID, groupID, constant.ReadDiffusion); err != nil {
+					log.NewError(operationID, utils.GetSelfFuncName(), groupID, err)
+				}
 			}
 		} else {
 			log.NewError(operationID, utils.GetSelfFuncName(), err.Error())