diff --git a/app/store/controller/cart/CartController.php b/app/store/controller/cart/CartController.php
index 2392beac7..6f3e640d8 100644
--- a/app/store/controller/cart/CartController.php
+++ b/app/store/controller/cart/CartController.php
@@ -4,6 +4,7 @@ namespace app\store\controller\cart;
 
 use app\api\logic\order\CartLogic;
 use app\api\validate\CartValidate;
+use app\common\model\store_branch_product\StoreBranchProduct;
 use app\store\lists\cart\CartList;
 use app\common\model\order\Cart;
 use app\store\controller\BaseAdminController;
@@ -32,6 +33,14 @@ class CartController extends BaseAdminController
         if ($count > 100) {
             return $this->fail('购物车商品不能大于100个，请先结算');
         }
+        //数量下单判断
+        $stock = StoreBranchProduct::where(
+            ['product_id'=>$params['product_id'],
+                'store_id'=>$params['store_id']
+            ])->value('stock')??0;
+        if ($params['cart_num'] >$stock) {
+            return $this->fail('库存数量不足');
+        }
         if ($result) {
             $res = CartLogic::edit($params);
         } else {