diff --git a/bonus-modules/bonus-material-mall/src/main/resources/mapper/material/device/DevInfoMapper.xml b/bonus-modules/bonus-material-mall/src/main/resources/mapper/material/device/DevInfoMapper.xml
index 5ea510a..620b811 100644
--- a/bonus-modules/bonus-material-mall/src/main/resources/mapper/material/device/DevInfoMapper.xml
+++ b/bonus-modules/bonus-material-mall/src/main/resources/mapper/material/device/DevInfoMapper.xml
@@ -389,9 +389,9 @@ PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN"
         select d.*,t.type_name as device_name,t.parent_name as group_name,c.company_name,t.group_name as type_name,t.p_id as group_id,t.group_id as company_id
         from ma_dev_info d
                  left join (select t.*, p.type_name as parent_name, p.type_id as p_id,mt.type_name as group_name, mt.type_id as group_id
-                            from ma_type_info t
-                                     left join ma_type_info p on t.parent_id=p.type_id
-                                     left join ma_type_info mt on p.parent_id = mt.type_id
+                            from ma_type t
+                                     left join ma_type p on t.parent_id=p.type_id
+                                     left join ma_type mt on p.parent_id = mt.type_id
         ) t on d.type_id = t.type_id
                  left join bm_company_info c on d.own_co = c.company_id