diff --git a/documentation20/cn/12.taos-sql/docs.md b/documentation20/cn/12.taos-sql/docs.md
index a626b0f293b38a71ed0d6616e23f672de900c3a3..71f873c6a11678f5c7c68bc933d0db96d8c85f8a 100755
--- a/documentation20/cn/12.taos-sql/docs.md
+++ b/documentation20/cn/12.taos-sql/docs.md
@@ -1858,14 +1858,14 @@ TDengine 中的表（列）名命名规则如下：
 
   | 字符序列    | **代表的字符**  |
   | :--------:     |   -------    |
-  | \'             |  单引号'      | 
-  | \"             |  双引号"      |
+  | `\'`             |  单引号'      | 
+  | `\"`             |  双引号"      |
   | \n             |  换行符       |
   | \r             |  回车符       |
   | \t             |  tab符       |
-  | \\             |  斜杠\        |
-  | \%             |  % 规则见下    |
-  | \_             |  _ 规则见下    |
+  | `\\`             |  斜杠\        |
+  | `\%`             |  % 规则见下    |
+  | `\_`             |  _ 规则见下    |
 
 - 转义字符使用规则
   1. 标识符里有转义字符（数据库名、表名、列名）
@@ -1873,4 +1873,4 @@ TDengine 中的表（列）名命名规则如下：
      2. 反引号``标识符： 保持原样，不转义
   2. 数据里有转义字符
      1. 遇到上面定义的转义字符会转义（%和_见下面说明），如果没有匹配的转义字符会忽略掉转义符\。
-     2. 对于%和_，因为在like里这两个字符是通配符，所以在模式匹配like里用\%和\_表示字符里本身的%和_，如果在like模式匹配上下文之外使用\%或\_，则它们的计算结果为字符串\%和\_，而不是%和_。
\ No newline at end of file
+     2. 对于%和_，因为在like里这两个字符是通配符，所以在模式匹配like里用`\%`和`\_`表示字符里本身的%和_，如果在like模式匹配上下文之外使用`\%`或`\_`，则它们的计算结果为字符串`\%`和`\_`，而不是%和_。
\ No newline at end of file
diff --git a/documentation20/en/12.taos-sql/docs.md b/documentation20/en/12.taos-sql/docs.md
index 052a46043bd62905800e4bfbabd235c5c8d5b8cc..17af500c7a8aade144c1ce42e540dbc7c73b74d9 100755
--- a/documentation20/en/12.taos-sql/docs.md
+++ b/documentation20/en/12.taos-sql/docs.md
@@ -1340,14 +1340,14 @@ Is not null supports all types of columns. Non-null expression is < > "" and onl
 
   | Escape Sequence    | **Character Represented by Sequence**  |
     | :--------:     |   -------------------   |
-  | \\'             |  A single quote (') character    | 
-  | \\"             |  A double quote (") character      |
+  | `\'`             |  A single quote (') character    | 
+  | `\"`             |  A double quote (") character      |
   | \n             |  A newline (linefeed) character       |
   | \r             |  A carriage return character       |
   | \t             |  A tab character       |
-  | \\\             |  A backslash (\) character        |
-  | \\%             |  A % character; see note following the table    |
-  | \\_             |  A _ character; see note following the table    |
+  | `\\`             |  A backslash (\) character        |
+  | `\%`             |  A % character; see note following the table    |
+  | `\_`             |  A _ character; see note following the table    |
 
 - Escape character usage rules
   - The escape characters that in a identifier (database name, table name, column name)
@@ -1355,4 +1355,4 @@ Is not null supports all types of columns. Non-null expression is < > "" and onl
     2. Backquote`` identifier： Keep it as it is.
   - The escape characters that in a data
     3. The escape character defined above will be escaped (% and _ see the description below). If there is no matching escape character, the escape character will be ignored.
-    4. The \% and \_ sequences are used to search for literal instances of % and _ in pattern-matching contexts where they would otherwise be interpreted as wildcard characters.If you use \% or \_ outside of pattern-matching contexts, they evaluate to the strings \% and \_, not to % and _.
\ No newline at end of file
+    4. The `\%` and `\_` sequences are used to search for literal instances of % and _ in pattern-matching contexts where they would otherwise be interpreted as wildcard characters.If you use `\%` or `\_` outside of pattern-matching contexts, they evaluate to the strings `\%` and `\_`, not to % and _.
\ No newline at end of file