diff --git a/packages/www/src/RULES.js b/packages/www/src/RULES.js
index ee7d4fb..db0cce7 100644
--- a/packages/www/src/RULES.js
+++ b/packages/www/src/RULES.js
@@ -264,9 +264,9 @@ module.exports = [{
     examples: ['正则', '前端']
 },
 {
-    title: '小数',
-    rule: /^\d+\.\d+$/,
-    examples: ['0.0', '0.09']
+    title: '小数(支持科学计数)',
+    rule: /^[+-]?(\d+([.]\d*)?([eE][+-]?\d+)?|[.]\d+([eE][+-]?\d+)?)$/,
+    examples: ['0.0', '0.09','4E+4']
 },
 {
     title: '只包含数字',