diff --git a/types/cascader.d.ts b/types/cascader.d.ts
index a602b6a1e..f7a844fcc 100644
--- a/types/cascader.d.ts
+++ b/types/cascader.d.ts
@@ -7,8 +7,8 @@ export type ExpandTrigger = 'click' | 'hover'
 export interface CascaderOption {
   label: string,
   value: any,
-  children: CascaderOption[],
-  disabled: boolean
+  children?: CascaderOption[],
+  disabled?: boolean
 }
 
 /** Cascader Component */