diff --git a/docs-2.0/3.ngql-guide/5.operators/7.string.md b/docs-2.0/3.ngql-guide/5.operators/7.string.md
index 5b9bb7ac0fc..6507c594e4a 100644
--- a/docs-2.0/3.ngql-guide/5.operators/7.string.md
+++ b/docs-2.0/3.ngql-guide/5.operators/7.string.md
@@ -21,11 +21,11 @@ Nebula Graph支持使用字符串运算符进行连接、搜索、匹配运算
 
 ```ngql
 nebula> RETURN 'a' + 'b';
-+-------+
-| (a+b) |
-+-------+
-| "ab"  |
-+-------+
++-----------+
+| ("a"+"b") |
++-----------+
+| "ab"      |
++-----------+
 nebula> UNWIND 'a' AS a UNWIND 'b' AS b RETURN a + b;
 +-------+
 | (a+b) |
@@ -68,7 +68,7 @@ nebula> GO FROM "player101" OVER serve WHERE !(properties($$).name CONTAINS "ets
 ### `(NOT) IN`
 
 ```ngql
-nebula> RETURN  1 IN [1,2,3], "Yao" NOT IN ["Yi", "Tim", "Kobe"], NULL IN ["Yi", "Tim", "Kobe"]
+nebula> RETURN  1 IN [1,2,3], "Yao" NOT IN ["Yi", "Tim", "Kobe"], NULL IN ["Yi", "Tim", "Kobe"];
 +----------------+------------------------------------+-------------------------------+
 | (1 IN [1,2,3]) | ("Yao" NOT IN ["Yi","Tim","Kobe"]) | (NULL IN ["Yi","Tim","Kobe"]) |
 +----------------+------------------------------------+-------------------------------+
@@ -79,14 +79,14 @@ nebula> RETURN  1 IN [1,2,3], "Yao" NOT IN ["Yi", "Tim", "Kobe"], NULL IN ["Yi",
 ### `(NOT) STARTS WITH`
 
 ```ngql
-nebula> RETURN 'apple' STARTS WITH 'app', 'apple' STARTS WITH 'a', 'apple' STARTS WITH toUpper('a')
+nebula> RETURN 'apple' STARTS WITH 'app', 'apple' STARTS WITH 'a', 'apple' STARTS WITH toUpper('a');
 +-----------------------------+---------------------------+------------------------------------+
 | ("apple" STARTS WITH "app") | ("apple" STARTS WITH "a") | ("apple" STARTS WITH toUpper("a")) |
 +-----------------------------+---------------------------+------------------------------------+
 | true                        | true                      | false                              |
 +-----------------------------+---------------------------+------------------------------------+
 
-nebula> RETURN 'apple' STARTS WITH 'b','apple' NOT STARTS WITH 'app'
+nebula> RETURN 'apple' STARTS WITH 'b','apple' NOT STARTS WITH 'app';
 +---------------------------+---------------------------------+
 | ("apple" STARTS WITH "b") | ("apple" NOT STARTS WITH "app") |
 +---------------------------+---------------------------------+
@@ -97,7 +97,7 @@ nebula> RETURN 'apple' STARTS WITH 'b','apple' NOT STARTS WITH 'app'
 ### `(NOT) ENDS WITH`
 
 ```ngql
-nebula> RETURN 'apple' ENDS WITH 'app', 'apple' ENDS WITH 'e', 'apple' ENDS WITH 'E', 'apple' ENDS WITH 'b'
+nebula> RETURN 'apple' ENDS WITH 'app', 'apple' ENDS WITH 'e', 'apple' ENDS WITH 'E', 'apple' ENDS WITH 'b';
 +---------------------------+-------------------------+-------------------------+-------------------------+
 | ("apple" ENDS WITH "app") | ("apple" ENDS WITH "e") | ("apple" ENDS WITH "E") | ("apple" ENDS WITH "b") |
 +---------------------------+-------------------------+-------------------------+-------------------------+
@@ -115,11 +115,11 @@ Nebula Graph支持使用正则表达式进行过滤，正则表达式的语法
 
 ```ngql
 nebula> RETURN "384748.39" =~ "\\d+(\\.\\d{2})?";
-+----------------------------+
-| (384748.39=~\d+(\.\d{2})?) |
-+----------------------------+
-| true                       |
-+----------------------------+
++--------------------------------+
+| ("384748.39"=~"\d+(\.\d{2})?") |
++--------------------------------+
+| true                           |
++--------------------------------+
 
 nebula> MATCH (v:player) WHERE v.name =~ 'Tony.*' RETURN v.name;
 +---------------+