diff --git a/src/hooks/useDownload.js b/src/hooks/useDownload.js
index cef1c4d5..f0056a12 100644
--- a/src/hooks/useDownload.js
+++ b/src/hooks/useDownload.js
@@ -2,15 +2,15 @@
 /**
  * 
  * @param {*} data 文件流Blob对象
- * @param {*} mimeType 类型
- * @param {*} fileName 名字
+ * @param {String} fileType [导出文件类型] 默认值 xls
+ * @param {String} fileName [导出文件名称] 默认值 导出文件
  */
-const useDownload = (data, fileName, mimeType = 'application/vnd.ms-excel;charset=UTF-8') => {
+const useDownload = (data, fileName = '导出文件', fileType = 'xls') => {
     const link = document.createElement('a');// 创建a标签
-    let blob = new Blob([data], { type: mimeType }); // 设置文件类型
+    // let blob = new Blob([data], { type: mimeType }); // 设置文件类型
     link.style.display = "none";
-    link.href = URL.createObjectURL(blob); // 创建URL
-    link.setAttribute("download", fileName);
+    link.href = URL.createObjectURL(data); // 创建URL
+    link.setAttribute("download", `${fileName}.${fileType}`);
     document.body.appendChild(link);
     link.click();
     URL.revokeObjectURL(link.href);
diff --git a/src/views/case/CaseRecommended.vue b/src/views/case/CaseRecommended.vue
index f9cf9964..ab184b4f 100644
--- a/src/views/case/CaseRecommended.vue
+++ b/src/views/case/CaseRecommended.vue
@@ -248,7 +248,7 @@ function handleOper(record, type) {
 const downloadInfo = (record) => {
   caseInfoDownload({ casesRecommendId: record.id })
     .then((res) => {
-      useDownload(res.data, '案例信息.xls')
+      useDownload(res.data, '案例信息')
     })
     .catch(() => {
       message.info("信息下载失败");