diff --git a/src/components/Form/src/hooks/useFormEvents.ts b/src/components/Form/src/hooks/useFormEvents.ts
index df6a91fb..c6b9b6ef 100644
--- a/src/components/Form/src/hooks/useFormEvents.ts
+++ b/src/components/Form/src/hooks/useFormEvents.ts
@@ -66,7 +66,7 @@ export function useFormEvents({
 
     // key 支持 a.b.c 的嵌套写法
     const delimiter = '.';
-    const nestKeyArray = fields.filter((item) => item.indexOf(delimiter) >= 0);
+    const nestKeyArray = fields.filter((item) => String(item).indexOf(delimiter) >= 0);
 
     const validKeys: string[] = [];
     Object.keys(values).forEach((key) => {