diff --git a/src/utils/file.ts b/src/utils/file.ts
index 0886c98b..16455f67 100644
--- a/src/utils/file.ts
+++ b/src/utils/file.ts
@@ -588,8 +588,8 @@ export const isJSONFun = (str: any) => {
 
 // 删除无用附件文件
 export const removeAttachmentFileIds = (oldIds: string, newIds: any) => {
-  const oldList = oldIds.split(',');
-  const newList = newIds.split(',');
+  const oldList = oldIds?.split(',') || [];
+  const newList = newIds?.split(',') || [];
   const newSet = new Set(newList);
   const delIds: any[] = oldList.filter((id) => !newSet.has(id));
   delIds.forEach((id: any) => {