diff --git a/web/src/main/resources/sql/jlw/teacherOpenCourseChatLog.md b/web/src/main/resources/sql/jlw/teacherOpenCourseChatLog.md
index acf42fd0..4d4df0d5 100644
--- a/web/src/main/resources/sql/jlw/teacherOpenCourseChatLog.md
+++ b/web/src/main/resources/sql/jlw/teacherOpenCourseChatLog.md
@@ -590,7 +590,7 @@ groupInfo
 
 getUnReadNum
 ===
-* 获取没有回复的消息
+* 根据登录身份，互动获取未读数
 
   SELECT
   count( 1 )