diff --git a/code/backend/RegulatoryManagementBackend/src/main/java/com/cpic/xim/utils/files/SaveUploadFile.java b/code/backend/RegulatoryManagementBackend/src/main/java/com/cpic/xim/utils/files/SaveUploadFile.java
index 7fbd5ac..0c49f1b 100644
--- a/code/backend/RegulatoryManagementBackend/src/main/java/com/cpic/xim/utils/files/SaveUploadFile.java
+++ b/code/backend/RegulatoryManagementBackend/src/main/java/com/cpic/xim/utils/files/SaveUploadFile.java
@@ -2,7 +2,7 @@
  * @Author: Kane Wang <wangkane@qq.com>
  * @Date: 2025-10-16 09:46:42
  * @LastEditors: Kane Wang
- * @LastModified: 2025-11-27 17:29:30
+ * @LastModified: 2025-11-30 13:48:12
  * @FilePath: src/main/java/com/cpic/xim/utils/files/SaveUploadFile.java
  * @Description:
  *
@@ -123,7 +123,7 @@ public class SaveUploadFile
                 // 文件名前加上时间戳，避免覆盖
                 Long milliSecond = LocalDateTime.now().toInstant( ZoneOffset.of( "+8" ) ).toEpochMilli();
 
-                fileName = String.valueOf( milliSecond ) + " - " + file.getOriginalFilename();
+                fileName = String.valueOf( milliSecond ) + "-" + file.getOriginalFilename();
                 File destFile = new File( fullPath, fileName );
 
                 file.transferTo( destFile );