diff --git a/webapp/controller/BlockChainController.class.php b/webapp/controller/BlockChainController.class.php
index 916ddcda..dc08ba11 100644
--- a/webapp/controller/BlockChainController.class.php
+++ b/webapp/controller/BlockChainController.class.php
@@ -316,14 +316,12 @@ class BlockChainController extends BaseAuthedController {
             )),
         ));
 
-        $response['item_id'] = $item_id;
-        $response['item_num'] = $item_count;
-
-        error_log("buy diamond, item_id = " . $item_id . " item_count = " . $item_count . " num = " . $num . " price = " . $price . " response = " . json_encode($response));
-
         $this->_rspData(
             array(
-                "block_chain" => $response
+                'trans_id' => $response['trans_id'],
+                'params' => $response['params'],
+                'item_id' => $item_id,
+                'item_num' => $item_count
             )
         );
     }