diff --git a/packages/taro-components/src/components/input/index.js b/packages/taro-components/src/components/input/index.js
index df9d3244768a..0ef6c51fc5e4 100644
--- a/packages/taro-components/src/components/input/index.js
+++ b/packages/taro-components/src/components/input/index.js
@@ -174,7 +174,7 @@ class Input extends Nerv.Component {
         className={cls}
         placeholder={placeholder}
         disabled={disabled}
-        max={maxLength}
+        maxlength={maxLength}
         onInput={this.onInput}
         onFocus={this.onFocus}
         onBlur={this.onBlur}