diff --git a/array.go b/array.go
index 6127d94..5dc3443 100644
--- a/array.go
+++ b/array.go
@@ -149,9 +149,9 @@ func (at *Array[Bt]) ToStringWithSplit(split string) StringResult {
 // Author : go_developer@163.com<白茶清欢>
 //
 // Date : 19:00 2024/10/13
-func (at *Array[Bt]) ExtraField(fieldName string) *Array[any] {
+func (at *Array[Bt]) ExtraField(fieldName string) String {
 	if at.IsNil() {
-		return ArrayType[any]([]any{})
+		return String("[]")
 	}
 	byteData, _ := json.Marshal(at.value)
 	res := make([]any, 0)
@@ -162,5 +162,5 @@ func (at *Array[Bt]) ExtraField(fieldName string) *Array[any] {
 			res = append(res, itemValue.Value())
 		}
 	}
-	return ArrayType(res)
+	return String(ArrayType(res).ToString().Value)
 }