diff --git a/bilibili/aceld/IM-System/client/client.go b/bilibili/aceld/IM-System/client/client.go
index 39fb145..3dbf638 100644
--- a/bilibili/aceld/IM-System/client/client.go
+++ b/bilibili/aceld/IM-System/client/client.go
@@ -4,7 +4,9 @@ package main
 import (
 	"flag"
 	"fmt"
+	"io"
 	"net"
+	"os"
 )
 
 type Client struct {
@@ -51,6 +53,19 @@ func (client *Client) menu() bool {
 	}
 }
 
+// client的更新用户名接口
+func (client *Client) UpdateName() bool {
+	fmt.Println(">>>>>> 请输入新用户名：")
+	fmt.Scanln(&client.Name)
+	sendMsg := "rename|" + client.Name + "\n"
+	_, err := client.conn.Write([]byte(sendMsg))
+	if err != nil {
+		fmt.Println("conn.Write err:", err)
+		return false
+	}
+	return true
+}
+
 func (client *Client) Run() {
 	for client.flag != 0 {
 		for !client.menu() {
@@ -67,10 +82,17 @@ func (client *Client) Run() {
 		case 3:
 			// 更新用户名
 			fmt.Println("已选择更新用户名模式...")
+			client.UpdateName()
 		}
 	}
 }
 
+// 处理server回应的消息（直接显示到标准输出）
+func (client *Client) DealResponse() {
+	// 一旦client.conn有数据就直接copy到stdout标准输出上，永久阻塞监听
+	io.Copy(os.Stdout, client.conn)
+}
+
 // 定义全局变量
 var serverIp string
 
@@ -95,6 +117,9 @@ func main() {
 	}
 	fmt.Println(">>>>>> 连接服务器成功……")
 
+	// 单独开启一个goroutine去处理server发送的消息
+	go client.DealResponse()
+
 	// for {
 	// 	time.Sleep(1 * time.Second)
 	// }