diff --git a/dictionary.go b/dictionary.go
index 9a04335..010e2f9 100644
--- a/dictionary.go
+++ b/dictionary.go
@@ -41,6 +41,16 @@ func (receiver *Dictionary[TKey, TValue]) Add(key TKey, value TValue) {
 	receiver.source[key] = value
 }
 
+// Update 更新元素
+func (receiver *Dictionary[TKey, TValue]) Update(key TKey, f func(value *TValue)) {
+	receiver.lock.Lock()
+	defer receiver.lock.Unlock()
+
+	v := receiver.source[key]
+	f(&v)
+	receiver.source[key] = v
+}
+
 // Clear 清除元素
 func (receiver *Dictionary[TKey, TValue]) Clear() {
 	receiver.lock.Lock()
diff --git a/test/dictionary_test.go b/test/dictionary_test.go
index 238b87d..8a46d67 100644
--- a/test/dictionary_test.go
+++ b/test/dictionary_test.go
@@ -56,6 +56,17 @@ func Test_dictionary_Add(t *testing.T) {
 	assert.Equal(t, "boy", dic.GetValue("sex"))
 }
 
+func Test_dictionary_Update(t *testing.T) {
+	maps := make(map[string]string)
+	maps["name"] = "steden"
+	maps["age"] = "18"
+	dic := collections.NewDictionaryFromMap[string, string](maps)
+	dic.Update("name", func(value *string) {
+		*value = "tao"
+	})
+	assert.Equal(t, "tao", dic.GetValue("name"))
+}
+
 func TestDictionary_AddMap(t *testing.T) {
 	dic := collections.NewDictionary[string, int]()
 	maps := map[string]int{"age": 18}