diff --git a/epmet-module/epmet-oss/epmet-oss-server/src/main/java/com/epmet/controller/OssController.java b/epmet-module/epmet-oss/epmet-oss-server/src/main/java/com/epmet/controller/OssController.java
index 5664533b48..4773af928c 100644
--- a/epmet-module/epmet-oss/epmet-oss-server/src/main/java/com/epmet/controller/OssController.java
+++ b/epmet-module/epmet-oss/epmet-oss-server/src/main/java/com/epmet/controller/OssController.java
@@ -281,6 +281,7 @@ public class OssController {
 	public Result<UploadImgResultDTO> uploadVariedFile(@RequestParam("file") MultipartFile file) {
 		String fileName = file.getOriginalFilename();
 		String format = "-" + fileName.substring(fileName.lastIndexOf(".") + NumConstant.ONE) + "-";
+		format = format.toLowerCase();
 		//1.校验上传文件类型
 		if (!ModuleConstant.PROJECT_FILE_CONTENT.contains(format)) {
 			log.error(String.format("上传文件类型格式错误，暂不支持此类文件上传，文件名->%s", fileName));