diff --git a/bilibili/aceld/IM-System/.gitignore b/bilibili/aceld/IM-System/.gitignore
new file mode 100644
index 0000000..9921f7d
--- /dev/null
+++ b/bilibili/aceld/IM-System/.gitignore
@@ -0,0 +1,2 @@
+/server
+!.gitignore
\ No newline at end of file
diff --git a/bilibili/aceld/IM-System/README.md b/bilibili/aceld/IM-System/README.md
new file mode 100644
index 0000000..d4316d9
--- /dev/null
+++ b/bilibili/aceld/IM-System/README.md
@@ -0,0 +1,25 @@
+# golang即时通信系统
+
+## 0.1版本
+
+基本server构建
+
+编译
+
+```sh
+go build -o server main.go server.go
+```
+
+启动
+
+```sh
+./server
+```
+
+客户端验证（在另一个终端上）
+
+```sh
+nc 127.0.0.1 8888
+```
+
+效果：在server端可以看到连接建立成功
diff --git a/bilibili/aceld/IM-System/go.mod b/bilibili/aceld/IM-System/go.mod
new file mode 100644
index 0000000..309cab5
--- /dev/null
+++ b/bilibili/aceld/IM-System/go.mod
@@ -0,0 +1,3 @@
+module IM-System
+
+go 1.23.0
diff --git a/bilibili/aceld/IM-System/main.go b/bilibili/aceld/IM-System/main.go
new file mode 100644
index 0000000..c18d2b8
--- /dev/null
+++ b/bilibili/aceld/IM-System/main.go
@@ -0,0 +1,6 @@
+package main
+
+func main() {
+	server := NewServer("127.0.0.1", 8888)
+	server.Start()
+}
diff --git a/bilibili/aceld/IM-System/server.go b/bilibili/aceld/IM-System/server.go
new file mode 100644
index 0000000..0e8ac57
--- /dev/null
+++ b/bilibili/aceld/IM-System/server.go
@@ -0,0 +1,49 @@
+package main
+
+import (
+	"fmt"
+	"net"
+)
+
+type Server struct {
+	Ip   string
+	Port int
+}
+
+// 创建一个server的接口
+func NewServer(ip string, port int) *Server {
+	server := &Server{
+		Ip:   ip,
+		Port: port,
+	}
+	return server
+}
+
+func (this *Server) Handler(conn net.Conn) {
+	// ...当前链接的业务
+	fmt.Println("连接建立成功")
+}
+
+// 启动服务器的接口
+func (this *Server) Start() {
+	// socket listen
+	listener, err := net.Listen("tcp", fmt.Sprintf("%s:%d", this.Ip, this.Port))
+	if err != nil {
+		fmt.Println("net.Listen err:", err)
+		return
+	}
+	// close listen socket
+	defer listener.Close()
+
+	for {
+		// accept
+		conn, err := listener.Accept()
+		if err != nil {
+			fmt.Println("listener accept err:", err)
+			continue
+		}
+		// do handler
+		go this.Handler(conn)
+	}
+
+}