diff --git a/src/rpc/chat/chat/send_msg.go b/src/rpc/chat/chat/send_msg.go
index cd7e5e18e..c36abd027 100644
--- a/src/rpc/chat/chat/send_msg.go
+++ b/src/rpc/chat/chat/send_msg.go
@@ -1,17 +1,44 @@
 package rpcChat
 
 import (
+	"Open_IM/src/common/config"
+	"Open_IM/src/common/constant"
+	http2 "Open_IM/src/common/http"
 	"Open_IM/src/common/log"
 	pbChat "Open_IM/src/proto/chat"
+	pbGroup "Open_IM/src/proto/group"
 	"Open_IM/src/utils"
 	"context"
+	"encoding/json"
+	"github.com/skiffer-git/grpc-etcdv3/getcdv3"
 	"math/rand"
+	"net/http"
 	"strconv"
+	"strings"
 	"time"
 )
 
-func (rpc *rpcChat) UserSendMsg(_ context.Context, pb *pbChat.UserSendMsgReq) (*pbChat.UserSendMsgResp, error) {
+type MsgCallBackReq struct {
+	SendID      string `json:"sendID"`
+	RecvID      string `json:"recvID"`
+	Content     string `json:"content"`
+	SendTime    int64  `json:"sendTime"`
+	MsgFrom     int32  `json:"msgFrom"`
+	ContentType int32  `json:"contentType"`
+	SessionType int32  `json:"sessionType"`
+	PlatformID  int32  `json:"senderPlatformID"`
+}
+type MsgCallBackResp struct {
+	ErrCode         int32  `json:"errCode"`
+	ErrMsg          string `json:"errMsg"`
+	ResponseErrCode int32  `json:"responseErrCode"`
+	ResponseResult  struct {
+		ModifiedMsg string `json:"modifiedMsg"`
+		Ext         string `json:"ext"`
+	}
+}
 
+func (rpc *rpcChat) UserSendMsg(_ context.Context, pb *pbChat.UserSendMsgReq) (*pbChat.UserSendMsgResp, error) {
 	serverMsgID := GetMsgID(pb.SendID)
 	pbData := pbChat.WSToMsgSvrChatMsg{}
 	pbData.MsgFrom = pb.MsgFrom
@@ -28,23 +55,90 @@ func (rpc *rpcChat) UserSendMsg(_ context.Context, pb *pbChat.UserSendMsgReq) (*
 	pbData.OperationID = pb.OperationID
 	pbData.Token = pb.Token
 	pbData.SendTime = utils.GetCurrentTimestampBySecond()
-	rpc.sendMsgToKafka(&pbData, pbData.RecvID)
-	rpc.sendMsgToKafka(&pbData, pbData.SendID)
 	replay := pbChat.UserSendMsgResp{}
-	replay.ReqIdentifier = pb.ReqIdentifier
-	replay.MsgIncr = pb.MsgIncr
-	replay.ClientMsgID = pb.ClientMsgID
-	replay.ServerMsgID = serverMsgID
+	m := MsgCallBackResp{}
+	if config.Config.MessageCallBack.CallbackSwitch {
+		bMsg, err := http2.Post(config.Config.MessageCallBack.CallbackUrl, MsgCallBackReq{
+			SendID:      pb.SendID,
+			RecvID:      pb.RecvID,
+			Content:     pb.Content,
+			SendTime:    pbData.SendTime,
+			MsgFrom:     pbData.MsgFrom,
+			ContentType: pb.ContentType,
+			SessionType: pb.SessionType,
+			PlatformID:  pb.PlatformID,
+		}, "application/json; charset=utf-8")
+		if err != nil {
+			log.ErrorByKv("callback to Business server err", pb.OperationID, "args", pb.String(), "err", err.Error())
+			return returnMsg(&replay, pb, http.StatusInternalServerError, http.StatusText(http.StatusInternalServerError), "", 0)
+		} else if err = json.Unmarshal(bMsg, &m); err != nil {
+			log.ErrorByKv("ws json Unmarshal err", pb.OperationID, "args", pb.String(), "err", err.Error())
+			return returnMsg(&replay, pb, 200, err.Error(), "", 0)
+		} else {
+			if m.ErrCode != 0 {
+				return returnMsg(&replay, pb, m.ResponseErrCode, m.ErrMsg, "", 0)
+			} else {
+				pbData.Content = m.ResponseResult.ModifiedMsg
+				rpc.sendMsgToKafka(&pbData, pbData.RecvID)
+				rpc.sendMsgToKafka(&pbData, pbData.SendID)
+				return returnMsg(&replay, pb, 0, "", serverMsgID, pbData.SendTime)
+			}
+		}
+	} else {
+		switch pbData.SessionType {
+		case constant.SingleChatType:
+			rpc.sendMsgToKafka(&pbData, pbData.RecvID)
+			rpc.sendMsgToKafka(&pbData, pbData.SendID)
+			return returnMsg(&replay, pb, 0, "", serverMsgID, pbData.SendTime)
+		case constant.GroupChatType:
+			etcdConn := getcdv3.GetConn(config.Config.Etcd.EtcdSchema, strings.Join(config.Config.Etcd.EtcdAddr, ","), config.Config.RpcRegisterName.OpenImGroupName)
+			client := pbGroup.NewGroupClient(etcdConn)
+			req := &pbGroup.GetGroupAllMemberReq{
+				GroupID:     pbData.RecvID,
+				Token:       pbData.Token,
+				OperationID: pbData.OperationID,
+			}
+			reply, err := client.GetGroupAllMember(context.Background(), req)
+			if err != nil {
+				log.Error(pbData.Token, pbData.OperationID, "rpc send_msg getGroupInfo failed, err = %s", err.Error())
+				return returnMsg(&replay, pb, 201, err.Error(), "", 0)
+			}
+			if reply.ErrorCode != 0 {
+				log.Error(pbData.Token, pbData.OperationID, "rpc send_msg getGroupInfo failed, err = %s", reply.ErrorMsg)
+				return returnMsg(&replay, pb, reply.ErrorCode, reply.ErrorMsg, "", 0)
+			}
+			groupID := pbData.RecvID
+			for _, v := range reply.MemberList {
+				pbData.RecvID = v.UserId + " " + groupID
+				rpc.sendMsgToKafka(&pbData, pbData.RecvID)
+			}
+			return returnMsg(&replay, pb, 0, "", serverMsgID, pbData.SendTime)
+		default:
+
+		}
+
+	}
+	return returnMsg(&replay, pb, 203, "unkonwn sessionType", "", 0)
 
-	return &replay, nil
 }
 func (rpc *rpcChat) sendMsgToKafka(m *pbChat.WSToMsgSvrChatMsg, key string) {
 	pid, offset, err := rpc.producer.SendMessage(m, key)
 	if err != nil {
-		log.ErrorByKv("kafka send failed", m.OperationID, "send data", m.String(), "pid", pid, "offset", offset, "err", err.Error())
+		log.ErrorByKv("kafka send failed", m.OperationID, "send data", m.String(), "pid", pid, "offset", offset, "err", err.Error(), "key", key)
 	}
+
 }
 func GetMsgID(sendID string) string {
 	t := time.Now().Format("2006-01-02 15:04:05")
 	return t + "-" + sendID + "-" + strconv.Itoa(rand.Int())
 }
+func returnMsg(replay *pbChat.UserSendMsgResp, pb *pbChat.UserSendMsgReq, errCode int32, errMsg, serverMsgID string, sendTime int64) (*pbChat.UserSendMsgResp, error) {
+	replay.ErrCode = errCode
+	replay.ErrMsg = errMsg
+	replay.ReqIdentifier = pb.ReqIdentifier
+	replay.MsgIncr = pb.MsgIncr
+	replay.ClientMsgID = pb.ClientMsgID
+	replay.ServerMsgID = serverMsgID
+	replay.SendTime = sendTime
+	return replay, nil
+}