diff --git a/application/third_party/trainsystem/models/BIZ_train_model.php b/application/third_party/trainsystem/models/BIZ_train_model.php
index 97a1b3a1..962ddf69 100644
--- a/application/third_party/trainsystem/models/BIZ_train_model.php
+++ b/application/third_party/trainsystem/models/BIZ_train_model.php
@@ -262,7 +262,7 @@ class BIZ_train_model extends CI_Model {
              AND bcli.COLI_State in ('11','13','8','63')
              AND bcli.COLI_WebCode in ('cht', 'JP', 'train_it', 'VC', 'train_ru','GM-Train','SHT','CT','WebMob-biz','WeChat-biz')
              AND (bcli.COLI_Price - bgai.GAI_SQJE) <= 20
-             AND (bgai.GAI_SQJE - bcli.COLI_Price) >= 0
+             AND (bgai.GAI_SQJE - bcli.COLI_Price) >= -20
              AND bcli.DeleteFlag = 0
              AND bgai.DeleteFlag = 0
 			 AND bcld.DeleteFlag = 0