diff --git a/src/utils/file/base64Conver.ts b/src/utils/file/base64Conver.ts
index d77618a0aa3d0e7593160156377f291d765a2280..6751d9777c495d8a0c7e08ccefdd83f693695a7b 100644
--- a/src/utils/file/base64Conver.ts
+++ b/src/utils/file/base64Conver.ts
@@ -5,7 +5,7 @@ export function dataURLtoBlob(base64Buf: string): Blob {
   const arr = base64Buf.split(',');
   const typeItem = arr[0];
   const mime = typeItem.match(/:(.*?);/)![1];
-  const bstr = atob(arr[1]);
+  const bstr = window.atob(arr[1]);
   let n = bstr.length;
   const u8arr = new Uint8Array(n);
   while (n--) {