diff --git a/app/admin/logic/warehouse_product/WarehouseProductLogic.php b/app/admin/logic/warehouse_product/WarehouseProductLogic.php
index 55b13ead9..662e98b8a 100644
--- a/app/admin/logic/warehouse_product/WarehouseProductLogic.php
+++ b/app/admin/logic/warehouse_product/WarehouseProductLogic.php
@@ -48,9 +48,10 @@ class WarehouseProductLogic extends BaseLogic
                         if (!$storeProduct) {
                             throw new BusinessException('商品不存在');
                         }
-                        $total_price = bcmul($after_nums, $storeProduct['purchase'], 2);
                         if($storeProduct['purchase']<=0){
                             $total_price=0;
+                        }else{
+                            $total_price = bcmul($after_nums, $storeProduct['purchase'], 2);
                         }
                         WarehouseProductStorege::update(['nums' => $after_nums, 'total_price' => $total_price], ['id' => $storege['id']]);
                     }