diff --git a/pkg/common/db/mongoModel.go b/pkg/common/db/mongoModel.go
index d385043b8..a6eb80ec6 100644
--- a/pkg/common/db/mongoModel.go
+++ b/pkg/common/db/mongoModel.go
@@ -450,7 +450,7 @@ func (d *DataBases) GetUserTags(userID string) ([]Tag, error) {
 	if err != nil {
 		return tags, err
 	}
-	if err = cursor.Decode(&tags); err != nil {
+	if err = cursor.All(ctx, &tags); err != nil {
 		return tags, err
 	}
 	return tags, nil
@@ -481,13 +481,11 @@ func (d *DataBases) SetTag(userID, tagID, newName string, increaseUserIDList []s
 	ctx, _ := context.WithTimeout(context.Background(), time.Duration(config.Config.Mongo.DBTimeout)*time.Second)
 	c := d.mongoClient.Database(config.Config.Mongo.DBDatabase).Collection(cTag)
 	var tag Tag
-	err := c.FindOne(ctx, bson.M{"tagID": tagID, "userID": userID}).Decode(&tag)
+	if err := c.FindOne(ctx, bson.M{"tagID": tagID, "userID": userID}).Decode(&tag); err != nil {
+		return err
+	}
 	if newName != "" {
-		_, err = c.UpdateOne(ctx, bson.D{{"userID", userID}, {"tagID", tagID}}, bson.D{
-			{"$set", bson.D{
-				{"tagName", newName},
-			}},
-		})
+		_, err := c.UpdateOne(ctx, bson.M{"userID": userID, "tagID": tagID}, bson.M{"$set": bson.M{"tagName": newName}})
 		if err != nil {
 			return err
 		}
@@ -497,15 +495,17 @@ func (d *DataBases) SetTag(userID, tagID, newName string, increaseUserIDList []s
 	for _, v := range reduceUserIDList {
 		for i2, v2 := range tag.UserList {
 			if v == v2 {
-				tag.UserList = append(tag.UserList[:i2], tag.UserList[i2+1:]...)
+				tag.UserList[i2] = ""
 			}
 		}
 	}
-	_, err = c.UpdateOne(ctx, bson.D{{"userID", userID}, {"tagID", tagID}}, bson.D{
-		{"$set", bson.D{
-			{"userList", tag.UserList},
-		}},
-	})
+	var newUserList []string
+	for _, v := range tag.UserList {
+		if v != "" {
+			newUserList = append(newUserList, v)
+		}
+	}
+	_, err := c.UpdateOne(ctx, bson.M{"userID": userID, "tagID": tagID}, bson.M{"$set": bson.M{"userIDList": newUserList}})
 	if err != nil {
 		return err
 	}
@@ -551,16 +551,16 @@ func (d *DataBases) SaveTagSendLog(sendReq *officePb.SendMsg2TagReq) error {
 	return err
 }
 
-func (d *DataBases) GetTagSendLogs(userID string, showNumber, pageNumber int32) ([]*TagSendLog, error) {
-	var tagSendLogs []*TagSendLog
+func (d *DataBases) GetTagSendLogs(userID string, showNumber, pageNumber int32) ([]TagSendLog, error) {
+	var tagSendLogs []TagSendLog
 	ctx, _ := context.WithTimeout(context.Background(), time.Duration(config.Config.Mongo.DBTimeout)*time.Second)
 	c := d.mongoClient.Database(config.Config.Mongo.DBDatabase).Collection(cSendLog)
 	findOpts := options.Find().SetSort(-1).SetLimit(int64(showNumber)).SetSkip(int64(showNumber) * (int64(pageNumber) - 1))
-	cursor, err := c.Find(ctx, bson.D{{"sendID", userID}}, findOpts)
+	cursor, err := c.Find(ctx, bson.M{"sendID": userID}, findOpts)
 	if err != nil {
 		return tagSendLogs, err
 	}
-	err = cursor.Decode(&tagSendLogs)
+	err = cursor.All(ctx, tagSendLogs)
 	if err != nil {
 		return tagSendLogs, err
 	}