diff --git a/app/Constants/OrderStatus.php b/app/Constants/OrderStatus.php
new file mode 100644
index 00000000..0874006d
--- /dev/null
+++ b/app/Constants/OrderStatus.php
@@ -0,0 +1,14 @@
+<?php
+
+namespace App\Constants;
+
+class OrderStatus
+{
+    public const UNKNOWN = -1;      // 未知
+    public const PENDING = 0;       // 待付款
+    public const PAID = 1;          // 已付款/待发货
+    public const SHIPPING = 2;      // 发货中
+    public const SHIPPED = 3;       // 已发货
+    public const COMPLETED = 9;     // 已完成
+    public const CANCELLED = 10;    // 已取消
+}
diff --git a/app/Endpoint/Api/Http/Controllers/Order/OrderController.php b/app/Endpoint/Api/Http/Controllers/Order/OrderController.php
index d4255045..53ee2422 100644
--- a/app/Endpoint/Api/Http/Controllers/Order/OrderController.php
+++ b/app/Endpoint/Api/Http/Controllers/Order/OrderController.php
@@ -131,16 +131,20 @@ class OrderController extends Controller
      */
     public function confirm($id, Request $request)
     {
-        $order = $request->user()->orders()->findOrFail($id);
+        $user = $request->user();
 
-        if (! $order->isConfirmable()) {
-            throw new BizException('订单不可确认');
-        }
+        DB::transaction(function () use ($id, $user) {
+            $order = $user->orders()->lockForUpdate()->findOrFail($id);
 
-        $order->update([
-            'status' => Order::STATUS_COMPLETED,
-            'completed_at' => now(),
-        ]);
+            if (! $order->isConfirmable()) {
+                throw new BizException('订单状态异常');
+            }
+
+            $order->update([
+                'status' => Order::STATUS_COMPLETED,
+                'completed_at' => now(),
+            ]);
+        });
 
         return response()->noContent();
     }
@@ -154,15 +158,19 @@ class OrderController extends Controller
      */
     public function cancel($id, Request $request)
     {
-        $order = $request->user()->orders()->findOrFail($id);
+        $user = $request->user();
 
-        if (! $order->isCancelable()) {
-            throw new BizException('订单不可取消');
-        }
+        DB::transaction(function () use ($id, $user) {
+            $order = $user->orders()->lockForUpdate()->findOrFail($id);
 
-        $order->update([
-            'status' => Order::STATUS_CANCELLED,
-        ]);
+            if (! $order->isCancelable()) {
+                throw new BizException('订单状态异常');
+            }
+
+            $order->update([
+                'status' => Order::STATUS_CANCELLED,
+            ]);
+        });
 
         return response()->noContent();
     }
diff --git a/app/Endpoint/Api/Http/Resources/OrderResource.php b/app/Endpoint/Api/Http/Resources/OrderResource.php
index 4235cfdc..73aca93d 100644
--- a/app/Endpoint/Api/Http/Resources/OrderResource.php
+++ b/app/Endpoint/Api/Http/Resources/OrderResource.php
@@ -24,7 +24,7 @@ class OrderResource extends JsonResource
             'shipping_fee' => $this->shipping_fee_format,
             'products_total_amount' => $this->products_total_amount_format,
             'total_amount' => $this->total_amount_format,
-            'status' => $this->status,
+            'status' => $this->order_status,
             'note' => (string) $this->note,
             'consignee_name' => $this->consignee_name,
             'consignee_telephone' => $this->consignee_telephone,
diff --git a/app/Endpoint/Api/Http/Resources/OrderResourceCollection.php b/app/Endpoint/Api/Http/Resources/OrderResourceCollection.php
index dea1d40a..ac7fd4cf 100644
--- a/app/Endpoint/Api/Http/Resources/OrderResourceCollection.php
+++ b/app/Endpoint/Api/Http/Resources/OrderResourceCollection.php
@@ -19,7 +19,7 @@ class OrderResourceCollection extends ResourceCollection
                 'id' => $item->id,
                 'sn' => $item->sn,
                 'total_amount' => $item->total_amount_format,
-                'status' => $item->status,
+                'status' => $item->order_status,
                 'created_date' => $item->created_at->toDateString(),
                 'products' => OrderProductResource::collection($item->whenLoaded('products')),
                 'expires_at' => $item->expires_at,
diff --git a/app/Models/Order.php b/app/Models/Order.php
index 1d01f1bf..e0a42070 100644
--- a/app/Models/Order.php
+++ b/app/Models/Order.php
@@ -2,6 +2,7 @@
 
 namespace App\Models;
 
+use App\Constants\OrderStatus;
 use App\Helpers\Numeric;
 use Dcat\Admin\Traits\HasDateTimeFormatter;
 use EloquentFilter\Filterable;
@@ -120,7 +121,7 @@ class Order extends Model
      */
     public function isConfirmable(): bool
     {
-        return $this->isPaid();
+        return $this->status === static::STATUS_PAID;
     }
 
     /**
@@ -130,31 +131,8 @@ class Order extends Model
      */
     public function isCancelable(): bool
     {
-        if ($this->isPaid()) {
-            return $this->shipping_state === static::SHIPPING_STATE_PENDING;
-        }
-
-        return $this->isPending();
-    }
-
-    /**
-     * 确认此订单是否是待付款
-     *
-     * @return bool
-     */
-    public function isPending(): bool
-    {
-        return $this->status === static::STATUS_PENDING;
-    }
-
-    /**
-     * 确认此订单是否是已付款
-     *
-     * @return bool
-     */
-    public function isPaid(): bool
-    {
-        return $this->status === static::STATUS_PENDING;
+        return in_array($this->status, [static::STATUS_PENDING, static::STATUS_PAID])
+            && $this->shipping_state === static::SHIPPING_STATE_PENDING;
     }
 
     /**
@@ -232,4 +210,38 @@ class Order extends Model
             $this->created_at->addSeconds(1800), false
         );
     }
+
+    /**
+     * 获取订单状态
+     *
+     * @return int
+     */
+    public function getOrderStatusAttribute(): int
+    {
+        $status = OrderStatus::UNKNOWN;
+
+        if ($this->status === static::STATUS_PENDING) {
+            $status = OrderStatus::PENDING;
+        } elseif ($this->status === static::STATUS_PAID) {
+            switch ($this->shipping_state) {
+                case static::SHIPPING_STATE_PENDING:
+                    $status = OrderStatus::PAID;
+                    break;
+
+                case static::SHIPPING_STATE_PROCESSING:
+                    $status = OrderStatus::SHIPPING;
+                    break;
+
+                case static::SHIPPING_STATE_PROCESSED:
+                    $status = OrderStatus::SHIPPED;
+                    break;
+            }
+        } elseif ($this->status === static::STATUS_COMPLETED) {
+            $status = OrderStatus::COMPLETED;
+        } elseif ($this->status === static::STATUS_CANCELLED) {
+            $status = OrderStatus::CANCELLED;
+        }
+
+        return $status;
+    }
 }