diff --git a/src/common/db/mysql_model/im_mysql_model/friend_request_model.go b/src/common/db/mysql_model/im_mysql_model/friend_request_model.go
index 35a829488..d58af6eba 100644
--- a/src/common/db/mysql_model/im_mysql_model/friend_request_model.go
+++ b/src/common/db/mysql_model/im_mysql_model/friend_request_model.go
@@ -5,12 +5,12 @@ import (
 	"time"
 )
 
-func InsertIntoFriendReq(reqId, userId string, flag int32, reqMessage string) error {
+func ReplaceIntoFriendReq(reqId, userId string, flag int32, reqMessage string) error {
 	dbConn, err := db.DB.MysqlDB.DefaultGormDB()
 	if err != nil {
 		return err
 	}
-	err = dbConn.Exec("insert into friend_request(req_id,user_id,flag,req_message,create_time) values(?,?,?,?,?)", reqId, userId, flag, reqMessage, time.Now()).Error
+	err = dbConn.Exec("replace into friend_request(req_id,user_id,flag,req_message,create_time) values(?,?,?,?,?)", reqId, userId, flag, reqMessage, time.Now()).Error
 	if err != nil {
 		return err
 	}
diff --git a/src/rpc/friend/friend/add_friend.go b/src/rpc/friend/friend/add_friend.go
index f0b3a2bce..b71f07123 100644
--- a/src/rpc/friend/friend/add_friend.go
+++ b/src/rpc/friend/friend/add_friend.go
@@ -11,7 +11,6 @@ import (
 	"Open_IM/src/push/logic"
 	"Open_IM/src/utils"
 	"context"
-	"fmt"
 )
 
 func (s *friendServer) AddFriend(ctx context.Context, req *pbFriend.AddFriendReq) (*pbFriend.CommonResp, error) {
@@ -22,10 +21,10 @@ func (s *friendServer) AddFriend(ctx context.Context, req *pbFriend.AddFriendReq
 		log.Error(req.Token, req.OperationID, "err=%s,parse token failed", err.Error())
 		return &pbFriend.CommonResp{ErrorCode: config.ErrParseToken.ErrCode, ErrorMsg: config.ErrParseToken.ErrMsg}, nil
 	}
-	//Establish a relationship in the friend request table
-	err = im_mysql_model.InsertIntoFriendReq(claims.UID, req.Uid, constant.NotFriendFlag, req.ReqMessage)
+	//Establish a latest relationship in the friend request table
+	err = im_mysql_model.ReplaceIntoFriendReq(claims.UID, req.Uid, constant.NotFriendFlag, req.ReqMessage)
 	if err != nil {
-		log.Error(req.Token, req.OperationID, fmt.Sprintf("err=%s,create friend request ship failed", err.Error()))
+		log.Error(req.Token, req.OperationID, "err=%s,create friend request ship failed", err.Error())
 		return &pbFriend.CommonResp{ErrorCode: config.ErrAddFriend.ErrCode, ErrorMsg: config.ErrAddFriend.ErrMsg}, nil
 	}
 	log.Info(req.Token, req.OperationID, "rpc add friend  is success return,uid=%s", req.Uid)
diff --git a/src/rpc/friend/friend/add_friend_response.go b/src/rpc/friend/friend/add_friend_response.go
index b7c1638e7..ab5fa65cd 100644
--- a/src/rpc/friend/friend/add_friend_response.go
+++ b/src/rpc/friend/friend/add_friend_response.go
@@ -28,7 +28,12 @@ func (s *friendServer) AddedFriend(ctx context.Context, req *pbFriend.AddedFrien
 	}
 	log.Info(req.Token, req.OperationID, "rpc add friend response success return,userid=%s,flag=%d", req.Uid, req.Flag)
 	//Change the status of the friend request form
-	if req.Flag == 1 {
+	if req.Flag == constant.FriendFlag {
+		//Establish friendship after find friend relationship not exists
+		_, err := im_mysql_model.FindFriendRelationshipFromFriend(claims.UID, req.Uid)
+		if err == nil {
+			return &pbFriend.CommonResp{ErrorCode: 0, ErrorMsg: "You are already friends"}, nil
+		}
 		//Establish two single friendship
 		err = im_mysql_model.InsertToFriend(claims.UID, req.Uid, req.Flag)
 		if err != nil {