diff --git a/components/radio/radio.tsx b/components/radio/radio.tsx
index eca3af6e0e..0a55df4e99 100644
--- a/components/radio/radio.tsx
+++ b/components/radio/radio.tsx
@@ -7,7 +7,7 @@ import RadioGroupContext from './context';
 import { composeRef } from '../_util/ref';
 import devWarning from '../_util/devWarning';
 
-const InternalRadio: React.ForwardRefRenderFunction<unknown, RadioProps> = (props, ref) => {
+const InternalRadio: React.ForwardRefRenderFunction<HTMLElement, RadioProps> = (props, ref) => {
   const context = React.useContext(RadioGroupContext);
   const { getPrefixCls, direction } = React.useContext(ConfigContext);
   const innerRef = React.useRef<HTMLElement>();
@@ -37,8 +37,8 @@ const InternalRadio: React.ForwardRefRenderFunction<unknown, RadioProps> = (prop
     radioProps.disabled = props.disabled || context.disabled;
   }
   const wrapperClassString = classNames(
+    `${prefixCls}-wrapper`,
     {
-      [`${prefixCls}-wrapper`]: true,
       [`${prefixCls}-wrapper-checked`]: radioProps.checked,
       [`${prefixCls}-wrapper-disabled`]: radioProps.disabled,
       [`${prefixCls}-wrapper-rtl`]: direction === 'rtl',
@@ -54,13 +54,14 @@ const InternalRadio: React.ForwardRefRenderFunction<unknown, RadioProps> = (prop
       onMouseEnter={props.onMouseEnter}
       onMouseLeave={props.onMouseLeave}
     >
-      <RcCheckbox {...radioProps} prefixCls={prefixCls} ref={mergedRef as any} />
+      <RcCheckbox {...radioProps} prefixCls={prefixCls} ref={mergedRef} />
       {children !== undefined ? <span>{children}</span> : null}
     </label>
   );
 };
 
 const Radio = React.forwardRef<unknown, RadioProps>(InternalRadio);
+
 Radio.displayName = 'Radio';
 
 Radio.defaultProps = {
diff --git a/components/radio/style/index.less b/components/radio/style/index.less
index bebbcc6765..7a805b1776 100644
--- a/components/radio/style/index.less
+++ b/components/radio/style/index.less
@@ -185,6 +185,7 @@ span.@{radio-prefix-cls} + * {
     position: absolute;
     top: 0;
     left: 0;
+    z-index: -1;
     width: 100%;
     height: 100%;
   }