diff --git a/beike/Shop/Services/CartService.php b/beike/Shop/Services/CartService.php
index 7f33c321..4ace1a50 100644
--- a/beike/Shop/Services/CartService.php
+++ b/beike/Shop/Services/CartService.php
@@ -19,6 +19,9 @@ class CartService
 {
     public static function list($customer)
     {
+        if (empty($customer)) {
+            return [];
+        }
         $cartList = Cart::query()->where('customer_id', $customer->id)->get();
         return $cartList;
     }