diff --git a/packages/vant-use/src/useRelation/useChildren.ts b/packages/vant-use/src/useRelation/useChildren.ts
index 53de68d75..dce0b72b7 100644
--- a/packages/vant-use/src/useRelation/useChildren.ts
+++ b/packages/vant-use/src/useRelation/useChildren.ts
@@ -61,7 +61,7 @@ export function useChildren(key: string | symbol) {
   const internalChildren: ComponentInternalInstance[] = reactive([]);
   const parent = getCurrentInstance()!;
 
-  const linkChildren = (value: any) => {
+  const linkChildren = (value?: any) => {
     const link = (child: ComponentInternalInstance) => {
       if (child.proxy) {
         internalChildren.push(child);