diff --git a/pqs-common/common-oss/src/main/java/com/njcn/oss/utils/FileStorageUtil.java b/pqs-common/common-oss/src/main/java/com/njcn/oss/utils/FileStorageUtil.java
index 5e1ccc93a..6b7d45601 100644
--- a/pqs-common/common-oss/src/main/java/com/njcn/oss/utils/FileStorageUtil.java
+++ b/pqs-common/common-oss/src/main/java/com/njcn/oss/utils/FileStorageUtil.java
@@ -154,7 +154,7 @@ public class FileStorageUtil {
             filePath = dir + minIoUtils.minFileName(multipartFile.getOriginalFilename());
             obsUtil.uploadMultipart(multipartFile, filePath);
         } else if (generalInfo.getBusinessFileStorage() == GeneralConstant.AliYUN_OSS) {
-            filePath = dir.endsWith("/")?dir+multipartFile.getOriginalFilename():dir+"/"+multipartFile.getOriginalFilename();
+            filePath = dir.endsWith("/")?dir+getFileNameWithoutPath(multipartFile):dir+"/"+getFileNameWithoutPath(multipartFile);
             aliYunOssUtils.uploadFile(dir, multipartFile);
         } else {
             try {
@@ -167,6 +167,15 @@ public class FileStorageUtil {
         }
         return filePath;
     }
+    public static String getFileNameWithoutPath(MultipartFile file) {
+        String originalFilename = file.getOriginalFilename();
+        if (originalFilename == null) {
+            return null;
+        }
+        // 统一分隔符为 '/'，再取最后一部分
+        String normalized = originalFilename.replace('\\', '/');
+        return normalized.substring(normalized.lastIndexOf('/') + 1);
+    }
 
     /***
      * 上传InputStream流，