diff --git a/laws-modules/src/main/java/com/jero/modules/activiti/process/standardComplianceCheck/service/impl/ProcessStandardComplianceCheckServiceImpl.java b/laws-modules/src/main/java/com/jero/modules/activiti/process/standardComplianceCheck/service/impl/ProcessStandardComplianceCheckServiceImpl.java
index e4ec9ccd..92a5b637 100644
--- a/laws-modules/src/main/java/com/jero/modules/activiti/process/standardComplianceCheck/service/impl/ProcessStandardComplianceCheckServiceImpl.java
+++ b/laws-modules/src/main/java/com/jero/modules/activiti/process/standardComplianceCheck/service/impl/ProcessStandardComplianceCheckServiceImpl.java
@@ -1133,6 +1133,9 @@ public class ProcessStandardComplianceCheckServiceImpl extends ServiceImpl<Proce
     }
 
     private MultipartFile getFileById(String fileId) {
+        if (StrUtil.isBlank(fileId)) {
+            return null;
+        }
         OSSFile fileInfo = ossFileService.getById(fileId);
         String fileName = fileInfo.getFileName();
         String url = fileInfo.getUrl();