diff --git a/ipgeo/leo.go b/ipgeo/leo.go
index ba09ca2..c9e3d0b 100644
--- a/ipgeo/leo.go
+++ b/ipgeo/leo.go
@@ -83,6 +83,11 @@ func receiveParse() {
 	}
 }
 
+// 当前的实现中，每次调用 receiveParse() 都会锁定 WebSocket 连接
+// 当前为单例模式，只启动一个 receiveParse 协程
+
+var receiveParseOnce sync.Once
+
 func LeoIP(ip string, timeout time.Duration, lang string, maptrace bool) (*IPGeoData, error) {
 	// TODO: 根据lang的值请求中文/英文API
 	// TODO: 根据maptrace的值决定是否请求经纬度信息
@@ -100,7 +105,10 @@ func LeoIP(ip string, timeout time.Duration, lang string, maptrace bool) (*IPGeo
 	// 发送请求
 	sendIPRequest(ip)
 	// 同步开启监听
-	go receiveParse()
+	// 确保 receiveParse 只启动一次
+	receiveParseOnce.Do(func() {
+		go receiveParse()
+	})
 
 	// 拥塞，等待数据返回
 	select {
diff --git a/trace/packet_listener.go b/trace/packet_listener.go
index 6bc9184..f957b99 100644
--- a/trace/packet_listener.go
+++ b/trace/packet_listener.go
@@ -13,12 +13,17 @@ type ReceivedMessage struct {
 	Err  error
 }
 
+// PacketListener 负责监听网络数据包并通过通道传递接收到的消息
 type PacketListener struct {
 	ctx      context.Context
 	Conn     net.PacketConn
 	Messages chan ReceivedMessage
 }
 
+// NewPacketListener 创建一个新的数据包监听器
+// conn: 用于接收数据包的连接
+// ctx: 用于控制监听器生命周期的上下文
+// 返回初始化好的 PacketListener 实例
 func NewPacketListener(conn net.PacketConn, ctx context.Context) *PacketListener {
 	results := make(chan ReceivedMessage, 50)