diff --git a/app/Admin/Controllers/ProductSkuController.php b/app/Admin/Controllers/ProductSkuController.php
index 8f45da2d..3d48c8be 100644
--- a/app/Admin/Controllers/ProductSkuController.php
+++ b/app/Admin/Controllers/ProductSkuController.php
@@ -125,7 +125,12 @@ class ProductSkuController extends AdminController
                 }
                 return bcmul($vipPrice, 100);
             });
-            $form->currency('sales_value')->symbol('@')->default(0);
+            $form->currency('sales_value')->symbol('@')->default(0)->saving(function ($salesValue) {
+                if (is_null($salesValue)) {
+                    return 0;
+                }
+                return $salesValue;
+            });
             $form->divider();
             $form->select('attr_group')->options(ProductGroup::all()->pluck('name', 'id'));
             $form->selectAttr('attrs')->listen('attr_group');
diff --git a/app/Admin/Controllers/ProductSpuController.php b/app/Admin/Controllers/ProductSpuController.php
index 823a3628..5153553a 100644
--- a/app/Admin/Controllers/ProductSpuController.php
+++ b/app/Admin/Controllers/ProductSpuController.php
@@ -189,7 +189,12 @@ class ProductSpuController extends AdminController
                 }
                 return bcmul($vipPrice, 100);
             });
-            $form->currency('sales_value')->symbol('@')->default(0);
+            $form->currency('sales_value')->symbol('@')->default(0)->saving(function ($salesValue) {
+                if (is_null($salesValue)) {
+                    return 0;
+                }
+                return $salesValue;
+            });
             $form->divider();
             $form->select('attr_group')->options(ProductGroup::all()->pluck('name', 'id'));
             $form->selectAttr('attrs')->listen('attr_group');