diff --git a/app/common/service/UsedCarService.php b/app/common/service/UsedCarService.php
index 804c980..3d3dc66 100644
--- a/app/common/service/UsedCarService.php
+++ b/app/common/service/UsedCarService.php
@@ -107,6 +107,26 @@ class UsedCarService
         return $data;
     }
 
+    public function beforeServiceUpdate($data, Request $request): array
+    {
+        if (empty($data['product_name'])) {
+            throw new BusinessException('产品名称不能为空');
+        }
+        if (empty($data['images'])) {
+            throw new BusinessException('产品图片不能为空');
+        }
+        if (empty($data['price'])) {
+            $data['price'] = 0;
+        }
+        if (!empty($data['attachment'])) {
+            $data['attachment'] = json_encode($data['attachment']);
+        }else{
+            $data['attachment'] = '';
+        }
+        $data['mileage'] = str_replace(['K','M','k','m'], '', $data['mileage']);
+        return $data;
+    }
+
     public function getcode($userId){
         $userCount =  Redis::get('used_car_count_'.$userId, 0);
         $todayStart = strtotime('today');