diff --git a/README.md b/README.md
index 76dad69..4cee50a 100644
--- a/README.md
+++ b/README.md
@@ -162,7 +162,7 @@ vscode应用商店中搜索"**any-rule**".
 
 ### 大于等于0, 小于等于150, 支持小数位出现5, 如145.5, 用于判断考卷分数
 ```javascript
-/^150$|^(?:\d|[1-9]\d|1[0-4]\d)(?:.5)?$/
+/^150$|^(?:\d|[1-9]\d|1[0-4]\d)(?:\.5)?$/
 ```
 
 ### html注释
diff --git a/packages/www/src/RULES.js b/packages/www/src/RULES.js
index 35e0821..0fdfd77 100644
--- a/packages/www/src/RULES.js
+++ b/packages/www/src/RULES.js
@@ -84,7 +84,7 @@ module.exports = [{
     },
     {
         title: '大于等于0, 小于等于150, 支持小数位出现5, 如145.5, 用于判断考卷分数',
-        rule: /^150$|^(?:\d|[1-9]\d|1[0-4]\d)(?:.5)?$/,
+        rule: /^150$|^(?:\d|[1-9]\d|1[0-4]\d)(?:\.5)?$/,
         examples: [150, 100.5]
     },
     {