diff --git a/app/Http/Controllers/Orders/DownloadOrderQrPdfController.php b/app/Http/Controllers/Orders/DownloadOrderQrPdfController.php
index b573c52a..b456d880 100644
--- a/app/Http/Controllers/Orders/DownloadOrderQrPdfController.php
+++ b/app/Http/Controllers/Orders/DownloadOrderQrPdfController.php
@@ -35,7 +35,7 @@ class DownloadOrderQrPdfController
         }
 
         if($warehouse->reference === WarehouseReferences::YD_YIWU){
-            $warehousePrefix = 'YW';
+            $warehousePrefix = 'YW/';
         }
 
         if($warehouse->reference === WarehouseReferences::YD_GUANG_ZHOU){