diff --git a/dataType/array.go b/dataType/array.go
index 957ec4a..0ed3fb1 100644
--- a/dataType/array.go
+++ b/dataType/array.go
@@ -1,8 +1,11 @@
 package dataType
 
 import (
+	"bytes"
 	"context"
 	"database/sql/driver"
+	"encoding/json"
+	"fmt"
 
 	"gorm.io/gorm"
 	"gorm.io/gorm/clause"
@@ -32,6 +35,73 @@ func (a AnyArray[T]) GormValue(ctx context.Context, db *gorm.DB) clause.Expr {
 	return arrayGormValue(a, db)
 }
 
+func (a AnyArray[T]) MarshalJSON() ([]byte, error) {
+	if a == nil {
+		return []byte("null"), nil
+	}
+	return json.Marshal(a)
+}
+
+func (a *AnyArray[T]) UnmarshalJSON(b []byte) error {
+	// 处理 null
+	if bytes.Equal(b, []byte("null")) {
+		*a = nil
+		return nil
+	}
+
+	var tmp []T
+	if err := json.Unmarshal(b, &tmp); err != nil {
+		return err
+	}
+	*a = tmp
+	return nil
+}
+
+// ToSlice 转换为普通切片
+func (a AnyArray[T]) ToSlice() []T {
+	return []T(a)
+}
+
+// NewAnyArrayFromSlice 从普通切片创建
+func NewAnyArrayFromSlice[T any](s []T) AnyArray[T] {
+	return AnyArray[T](s)
+}
+
+// IsEmpty 判空
+func (a AnyArray[T]) IsEmpty() bool {
+	return len(a) == 0
+}
+
+// Copy 深拷贝
+func (a AnyArray[T]) Copy() AnyArray[T] {
+	tmp := make([]T, len(a))
+	copy(tmp, a)
+	return tmp
+}
+
+// Append 追加元素
+func (a *AnyArray[T]) Append(elems ...T) {
+	*a = append(*a, elems...)
+}
+
+// Get 获取元素（带边界检查）
+func (a AnyArray[T]) Get(index int) (T, error) {
+	if index < 0 || index >= len(a) {
+		var zero T
+		return zero, fmt.Errorf("index out of range: %d", index)
+	}
+	return a[index], nil
+}
+
+// Set 设置元素
+func (a *AnyArray[T]) Set(index int, value T) error {
+	if index < 0 || index >= len(*a) {
+		return fmt.Errorf("index out of range: %d", index)
+	}
+	(*a)[index] = value
+	return nil
+}
+
 type Array []any
 
 // Value return json value, implement driver.Valuer interface