diff --git a/README.md b/README.md
index 0019186..60458d7 100644
--- a/README.md
+++ b/README.md
@@ -4,7 +4,7 @@
 
 ## 大于0, 小于150, 支持小数位出现5, 如145.5, 用于判断考卷分数
 ```javascript
-/^150$|(^\d|^\d{2}|^\d[0-4]\d)(\.5)?$/
+/^150$|(^\d|^[1-9]\d|^[1][0-4]\d)(\.5)?$/
 ```
 
 ## html注释
diff --git a/src/RULES.js b/src/RULES.js
index 5e68d5d..8eec05b 100644
--- a/src/RULES.js
+++ b/src/RULES.js
@@ -1,7 +1,7 @@
 module.exports = [
     {
         title: '大于0, 小于150, 支持小数位出现5, 如145.5, 用于判断考卷分数',
-        rule: /^150$|(^\d|^\d{2}|^\d[0-4]\d)(\.5)?$/,
+        rule: /^150$|(^\d|^[1-9]\d|^[1][0-4]\d)(\.5)?$/,
         example: '150, 100.5'
     },
     {