diff --git a/packages/field/index.wxs b/packages/field/index.wxs
index bd9b7143..51b03781 100644
--- a/packages/field/index.wxs
+++ b/packages/field/index.wxs
@@ -5,10 +5,10 @@ function inputStyle(autosize) {
   if (autosize.constructor === 'Object') {
     var style = '';
     if (autosize.minHeight) {
-      style += 'min-height:' + utils.addUnit(autosize.minHeight);
+      style += 'min-height:' + utils.addUnit(autosize.minHeight) + ';';
     }
     if (autosize.maxHeight) {
-      style += 'min-height:' + utils.addUnit(autosize.maxHeight);
+      style += 'max-height:' + utils.addUnit(autosize.maxHeight) + ';';
     }
     return style;
   }