diff --git a/components/form/FormItem.jsx b/components/form/FormItem.jsx
index b48b029f8..db90cddde 100644
--- a/components/form/FormItem.jsx
+++ b/components/form/FormItem.jsx
@@ -131,10 +131,9 @@ class FormItem extends React.Component {
   renderChildren() {
     const props = this.props;
     const children = React.Children.map(props.children, (child) => {
-      if (typeof child.type === 'function' && !child.props.size) {
+      if (child && typeof child.type === 'function' && !child.props.size) {
         return React.cloneElement(child, { size: 'large' });
       }
-
       return child;
     });
     return [