diff --git a/backend/app/Model/Order.php b/backend/app/Model/Order.php
index 7ab1b35..a7f33b1 100644
--- a/backend/app/Model/Order.php
+++ b/backend/app/Model/Order.php
@@ -27,10 +27,10 @@ use App\Model\OrderItem;
  * @property string $coupon_amount 折扣券 - 优惠券金额
  * @property string $voucher_amount 代金券 - 兑换券金额
  * @property int $order_type_id 订单类型 ID, 默认为一般订单，部分平台可能有补差价，代金券订单等
- * @property string $created_date 订单的创建时间
- * @property string $updated_date 订单的更新时间
- * @property string $paid_date 订单的付款时间
- * @property string $shipping_date 订单的发货时间
+ * @property \Carbon\Carbon $created_date 订单的创建时间
+ * @property \Carbon\Carbon|null $updated_date 订单的更新时间
+ * @property \Carbon\Carbon|null $paid_date 订单的付款时间
+ * @property \Carbon\Carbon|null $shipping_date 订单的发货时间
  * @property string $zipcode 邮编
  * @property string $city 城市
  * @property string $province 省
@@ -56,7 +56,24 @@ class Order extends Model
     /**
      * The attributes that should be cast to native types.
      */
-    protected array $casts = ['id' => 'integer', 'company_id' => 'integer', 'platform_id' => 'integer', 'store_id' => 'integer', 'order_status_id' => 'integer', 'payment_method_id' => 'integer', 'presale' => 'boolean', 'order_type_id' => 'integer', 'raw' => 'json', 'ext' => 'json', 'created_at' => 'datetime', 'updated_at' => 'datetime'];
+    protected array $casts = [
+        'id' => 'integer',
+        'company_id' => 'integer',
+        'platform_id' => 'integer',
+        'store_id' => 'integer',
+        'order_status_id' => 'integer',
+        'payment_method_id' => 'integer',
+        'presale' => 'boolean',
+        'order_type_id' => 'integer',
+        'created_date' => 'datetime',
+        'updated_date' => 'datetime',
+        'paid_date' => 'datetime',
+        'shipping_date' => 'datetime',
+        'raw' => 'json',
+        'ext' => 'json',
+        'created_at' => 'datetime',
+        'updated_at' => 'datetime',
+    ];
 
     /**
      * 获取订单子项（基于 hypertable 分区键查询）
diff --git a/backend/app/Model/OrderItem.php b/backend/app/Model/OrderItem.php
index 76d90a8..0f740b5 100644
--- a/backend/app/Model/OrderItem.php
+++ b/backend/app/Model/OrderItem.php
@@ -21,8 +21,8 @@ namespace App\Model;
  * @property int $quantity 商品子项总数量
  * @property string $discount 订单子项总的折扣金额
  * @property string $total 总金额 = 单价X数量 - 折扣
- * @property string $created_date 订单创建时间（与父订单 created_date 一致，hypertable 分区键）
- * @property string $ext 扩展字段
+ * @property \Carbon\Carbon $created_date 订单创建时间（与父订单 created_date 一致，hypertable 分区键）
+ * @property array|null $ext 扩展字段
  * @property \Carbon\Carbon $created_at
  * @property \Carbon\Carbon $updated_at
  * @mixin \App_Model_OrderItem
@@ -42,7 +42,20 @@ class OrderItem extends Model
     /**
      * The attributes that should be cast to native types.
      */
-    protected array $casts = ['id' => 'integer', 'company_id' => 'integer', 'platform_id' => 'integer', 'store_id' => 'integer', 'order_id' => 'integer', 'sub_order_type_id' => 'integer', 'product_id' => 'integer', 'quantity' => 'integer', 'created_at' => 'datetime', 'updated_at' => 'datetime'];
+    protected array $casts = [
+        'id' => 'integer',
+        'company_id' => 'integer',
+        'platform_id' => 'integer',
+        'store_id' => 'integer',
+        'order_id' => 'integer',
+        'sub_order_type_id' => 'integer',
+        'product_id' => 'integer',
+        'quantity' => 'integer',
+        'created_date' => 'datetime',
+        'ext' => 'json',
+        'created_at' => 'datetime',
+        'updated_at' => 'datetime',
+    ];
 
     /**
      * 获取父订单（基于 hypertable 分区键查询）