diff --git a/webapp/services/callback/BuyShopGoodsCbService.php b/webapp/services/callback/BuyShopGoodsCbService.php
index ef61194e..ce3ed90f 100644
--- a/webapp/services/callback/BuyShopGoodsCbService.php
+++ b/webapp/services/callback/BuyShopGoodsCbService.php
@@ -76,13 +76,17 @@ class BuyShopGoodsCbService
     $address = $order['address'];
     $item_id = $order['item_id'];
     $item_num = $order['item_num'];
+    $id = null;
+    if (isset($ext_data['id'])) {
+      $id = $ext_data['id'];
+    }
 
     error_log("callback buynormal address: $address, order_id: $order_id, goods_id: $item_id, goods_num: $item_num");
 
     $this->_addGoods($address, array(
       'goods_id' => $item_id,
       'goods_num' => $item_num,
-      'id' => $ext_data['id'],
+      'id' => $id,
     ));
   }