diff --git a/webapp/services/callback/common/SignatureService.php b/webapp/services/callback/common/SignatureService.php
index 9c31bb3d..e4f4e0bc 100644
--- a/webapp/services/callback/common/SignatureService.php
+++ b/webapp/services/callback/common/SignatureService.php
@@ -4,7 +4,7 @@ namespace services;
 
 class SignatureService {
 
-    const ERRCODE_SIGN = 2001;
+    const ERRCODE_SIGN_ERROR = 2001;
 
     public static function web3ServiceCheck()
     {
@@ -17,12 +17,12 @@ class SignatureService {
             )
         );
         if (!$row) {
-            myself()-_rspErr(self::ERRCODE_SIGN);
+            myself()-_rspErr(self::ERRCODE_SIGN_ERROR, 'not found cb info');
             die();
         }
         $sign = self::normalMd5Sign($_REQUEST, $row['secret_key'], array('_sign'));
         if ($sign != $row['signature']) {
-            myself()-_rspErr(self::ERRCODE_SIGN);
+            myself()-_rspErr(self::ERRCODE_SIGN_ERROR, 'sign error');
             die();
         }
     }