diff --git a/components/radio/radio-context.ts b/components/radio/radio-context.ts
index 9a0ecb5..b29271b 100644
--- a/components/radio/radio-context.ts
+++ b/components/radio/radio-context.ts
@@ -1,7 +1,7 @@
 import React from 'react'
 
 export interface RadioConfig {
-  updateState: (value: string) => void
+  updateState?: (value: string) => void
   disabledAll: boolean
   value?: string
   inGroup: boolean
@@ -9,7 +9,6 @@ export interface RadioConfig {
 
 const defaultContext = {
   disabledAll: false,
-  updateState: () => {},
   inGroup: false,
 }
 
diff --git a/components/radio/radio.tsx b/components/radio/radio.tsx
index 8480f5d..b449ad7 100644
--- a/components/radio/radio.tsx
+++ b/components/radio/radio.tsx
@@ -77,7 +77,7 @@ const Radio: React.FC<React.PropsWithChildren<RadioProps>> = ({
     }
     setSelfChecked(!selfChecked)
     if (inGroup) {
-      updateState(radioValue as string)
+      updateState && updateState(radioValue as string)
     }
     onChange && onChange(selfEvent)
   }