diff --git a/internal/conns/map_test_test.go b/internal/conns/map_test_test.go
new file mode 100644
index 0000000..03cda22
--- /dev/null
+++ b/internal/conns/map_test_test.go
@@ -0,0 +1,67 @@
+// Copyright 2024 GoEdge CDN goedge.cdn@gmail.com. All rights reserved. Official site: https://goedge.cn .
+
+package conns_test
+
+import (
+	"github.com/TeaOSLab/EdgeNode/internal/conns"
+	"github.com/TeaOSLab/EdgeNode/internal/utils/testutils"
+	"net"
+	"runtime"
+	"testing"
+	"time"
+)
+
+type testConn struct {
+	net.Conn
+
+	addr net.Addr
+}
+
+func (this *testConn) Read(b []byte) (n int, err error) {
+	return
+}
+func (this *testConn) Write(b []byte) (n int, err error) {
+	return
+}
+func (this *testConn) Close() error {
+	return nil
+}
+func (this *testConn) LocalAddr() net.Addr {
+	return &net.TCPAddr{
+		IP:   net.ParseIP(testutils.RandIP()),
+		Port: 1234,
+	}
+}
+func (this *testConn) RemoteAddr() net.Addr {
+	if this.addr != nil {
+		return this.addr
+	}
+	this.addr = &net.TCPAddr{
+		IP:   net.ParseIP(testutils.RandIP()),
+		Port: 1234,
+	}
+	return this.addr
+}
+func (this *testConn) SetDeadline(t time.Time) error {
+	return nil
+}
+func (this *testConn) SetReadDeadline(t time.Time) error {
+	return nil
+}
+func (this *testConn) SetWriteDeadline(t time.Time) error {
+	return nil
+}
+
+func BenchmarkMap_Add(b *testing.B) {
+	runtime.GOMAXPROCS(512)
+
+	var m = conns.NewMap()
+
+	b.RunParallel(func(pb *testing.PB) {
+		for pb.Next() {
+			var conn = &testConn{}
+			m.Add(conn)
+			m.Remove(conn)
+		}
+	})
+}