diff --git a/yxt-common/yxt-common-base/src/main/java/com/yxt/common/base/config/component/FileBatchUploadComponent.java b/yxt-common/yxt-common-base/src/main/java/com/yxt/common/base/config/component/FileBatchUploadComponent.java
index de54149..bb31f12 100644
--- a/yxt-common/yxt-common-base/src/main/java/com/yxt/common/base/config/component/FileBatchUploadComponent.java
+++ b/yxt-common/yxt-common-base/src/main/java/com/yxt/common/base/config/component/FileBatchUploadComponent.java
@@ -76,6 +76,7 @@ public class FileBatchUploadComponent {
             String fileName = file.getOriginalFilename();
             // 后缀名
             String suffixName = fileName.substring(fileName.lastIndexOf("."));
+            suffixName = suffixName.toLowerCase();
             if (suffixName.equals(".pdf")) { // pdf文件
                 ResultBean<FileUploadResult> resultBean = fileUploadComponent.uploadFile(file);
                 FileUploadResult uploadResult = resultBean.getData();