diff --git a/bd-business/bd-business-system/src/main/resources/mapper/system/sys/SysApprovalMapper.xml b/bd-business/bd-business-system/src/main/resources/mapper/system/sys/SysApprovalMapper.xml
index aacc1c71..a03383d6 100644
--- a/bd-business/bd-business-system/src/main/resources/mapper/system/sys/SysApprovalMapper.xml
+++ b/bd-business/bd-business-system/src/main/resources/mapper/system/sys/SysApprovalMapper.xml
@@ -39,7 +39,7 @@
         max(sa.process) process,
         wm_concat(sus.nick_name) send
         from (select sa.pk_id,
-        replace(wm_concat(su.nick_name), ',', ' - ') process
+        to_char(replace(wm_concat(su.nick_name), ',', ' - ')) process
         from sys_approval sa
         left join sys_approval_item sai
         on sai.pk_approval = sa.pk_id