diff --git a/app/api/lists/product/ProductLists.php b/app/api/lists/product/ProductLists.php
index ef91ba000..763bdddbd 100644
--- a/app/api/lists/product/ProductLists.php
+++ b/app/api/lists/product/ProductLists.php
@@ -116,10 +116,19 @@ class ProductLists extends BaseAdminDataLists implements ListsSearchInterface, L
     public function extend()
     {
         $off_activity = Config::where('name', 'off_activity')->value('value');
-        return [
-            'off_activity' => $off_activity,
-            'price' => 'cost',
-            'op_price' => 'price',
-        ];
+        if($off_activity==1){
+            $data=[
+                'off_activity' => $off_activity,
+                'price' => 'cost',
+                'op_price' => 'price',
+            ];
+        }else{
+            $data=[
+                'off_activity' => $off_activity,
+                'price' => 'price',
+                'op_price' => 'price',
+            ];
+        }
+        return $data;
     }
 }