diff --git a/src/utils/downloadUtils.js b/src/utils/downloadUtils.js
index 9dcf126..6775b00 100644
--- a/src/utils/downloadUtils.js
+++ b/src/utils/downloadUtils.js
@@ -4,7 +4,7 @@
   // IE及IE内核浏览器,ie10+
   if (window.navigator.msSaveBlob) {
     try {
-      window.navigator.msSaveBlob(blob, fileName)
+      window.navigator.msSaveBlob(blob, fileName + '.xlsx')
     } catch (e) {
       console.log(e)
     }