diff --git a/gys_system/models/groupinfo_model.php b/gys_system/models/groupinfo_model.php
index 51a5f6a5..59493a9b 100644
--- a/gys_system/models/groupinfo_model.php
+++ b/gys_system/models/groupinfo_model.php
@@ -210,7 +210,7 @@ class Groupinfo_model extends CI_Model {
                        ESI_Describe,
                        ESI_ServiceSNBack,
                        ESI_Order,
-                       ESI_Rate,
+                       isnull(ESI_Rate,0) as ESI_Rate,
                        ESI_Comment,
                        ESI_NotCount,
                        ESI_NotCountReason,