diff --git a/webapp/controller/ShopController.class.php b/webapp/controller/ShopController.class.php
index 5cbf5db4..fd2f014a 100644
--- a/webapp/controller/ShopController.class.php
+++ b/webapp/controller/ShopController.class.php
@@ -1106,6 +1106,14 @@ class ShopController extends BaseAuthedController
             )),
         ));
 
+        error_log("buyGoodsDS start " + json_encode(array(
+            'idx' => $idx,
+            'grid' => $grid,
+            'count' => $count,
+            'block_chain' => $response,
+        )
+        ));
+        
         $this->_rspData(
             array(
                 'idx' => $idx,