diff --git a/map.go b/map.go
new file mode 100644
index 0000000..6d23965
--- /dev/null
+++ b/map.go
@@ -0,0 +1,46 @@
+// Package wrapper ...
+//
+// Description : wrapper ...
+//
+// Author : go_developer@163.com<白茶清欢>
+//
+// Date : 2024-11-06 18:27
+package wrapper
+
+import "sync"
+
+var mapLock = &sync.RWMutex{}
+
+type Map map[string]any
+
+func (m *Map) lock() {
+	mapLock.Lock()
+}
+
+func (m *Map) unlock() {
+	mapLock.Unlock()
+}
+
+func (m *Map) rlock() {
+	mapLock.RLock()
+}
+
+func (m *Map) rUnlock() {
+	mapLock.RUnlock()
+}
+
+// Exist key是否存在
+//
+// Author : go_developer@163.com<白茶清欢>
+//
+// Date : 18:34 2024/11/6
+func (m *Map) Exist(key string) bool {
+	if nil == m {
+		return false
+	}
+	m.rlock()
+	defer m.unlock()
+	v := *m
+	_, exist := v[key]
+	return exist
+}
diff --git a/map_test.go b/map_test.go
new file mode 100644
index 0000000..b5e022e
--- /dev/null
+++ b/map_test.go
@@ -0,0 +1,21 @@
+// Package wrapper ...
+//
+// Description : wrapper ...
+//
+// Author : go_developer@163.com<白茶清欢>
+//
+// Date : 2024-11-06 18:37
+package wrapper
+
+import (
+	"fmt"
+	"testing"
+)
+
+func TestMap_Exist(t *testing.T) {
+	testData := Map(map[string]any{
+		"name": "zhang",
+	})
+	fmt.Println(testData.Exist("name"))
+	fmt.Println(testData.Exist("age"))
+}