diff --git a/src/common/db/mongoModel.go b/src/common/db/mongoModel.go
index d7bcd45e6..5742042bf 100644
--- a/src/common/db/mongoModel.go
+++ b/src/common/db/mongoModel.go
@@ -5,7 +5,6 @@ import (
 	"Open_IM/src/common/constant"
 	"Open_IM/src/common/log"
 	pbMsg "Open_IM/src/proto/chat"
-	"Open_IM/src/utils"
 	"errors"
 	"github.com/golang/protobuf/proto"
 	"gopkg.in/mgo.v2/bson"
@@ -125,7 +124,7 @@ func (d *DataBases) GetMsgBySeqList(uid string, seqList []int64) (SingleMsg []*p
 				log.NewError("", "not find seqUid", seqUid, value, uid, seqList)
 				return nil, nil, MaxSeq, MinSeq, err
 			}
-			if utils.IsContainInt64(pChat.RecvSeq, value) {
+			if isContainInt64(pChat.RecvSeq, value) {
 				temp.SendID = pChat.SendID
 				temp.RecvID = pChat.RecvID
 				temp.MsgFrom = pChat.MsgFrom
@@ -319,3 +318,14 @@ func getSeqUid(uid string, seq int64) string {
 	seqSuffix := seq / singleGocMsgNum
 	return uid + ":" + strconv.FormatInt(seqSuffix, 10)
 }
+func isContainInt64(target int64, List []int64) bool {
+
+	for _, element := range List {
+
+		if target == element {
+			return true
+		}
+	}
+	return false
+
+}
diff --git a/src/utils/strings.go b/src/utils/strings.go
index 69141a6df..39c797859 100644
--- a/src/utils/strings.go
+++ b/src/utils/strings.go
@@ -37,17 +37,7 @@ func IsContain(target string, List []string) bool {
 	return false
 
 }
-func IsContainInt64(target int64, List []int64) bool {
 
-	for _, element := range List {
-
-		if target == element {
-			return true
-		}
-	}
-	return false
-
-}
 func InterfaceArrayToStringArray(data []interface{}) (i []string) {
 	for _, param := range data {
 		i = append(i, param.(string))