diff --git a/docs/zh/12-taos-sql/27-indexing.md b/docs/zh/12-taos-sql/27-indexing.md
index f934672bd2..cf8cac1bed 100644
--- a/docs/zh/12-taos-sql/27-indexing.md
+++ b/docs/zh/12-taos-sql/27-indexing.md
@@ -21,7 +21,8 @@ functions:
     function [, function] ...
 ```
 ### tag 索引
- [tag 索引] (../tag-index)
+
+ [tag 索引](../tag-index)
 
 ### SMA 索引