diff --git a/app/Service/v3/Implementations/OrderOnlineService.php b/app/Service/v3/Implementations/OrderOnlineService.php
index 1e8706c..3744a78 100644
--- a/app/Service/v3/Implementations/OrderOnlineService.php
+++ b/app/Service/v3/Implementations/OrderOnlineService.php
@@ -207,7 +207,14 @@ class OrderOnlineService implements OrderOnlineServiceInterface
                 $subAmount = 0;
 
                 // 店铺分类
-                $storeType = Store::query()->where(['id' => $storeId])->value('category_id');
+                $store = Store::query()->where(['id' => $storeId])->first();
+
+                // 禁止店铺自己下自己的单
+                if (in_array($userId, [$store->user_id, $store->admin_id])) {
+                    throw new ErrorCodeException(ErrorCode::ORDER_ONLINE_FAIL, '无法购买自己店铺商品', ['store' => json_encode($store), 'user_id' => $userId, 'store_item' => $storeItem]);
+                }
+
+                $storeType = $store->category_id;
                 $storeTypeIds[] = (string)$storeType;
                 // 店铺今天的订单数
                 $count = Order::query()