diff --git a/visa/visa-server/src/main/java/cn/axzo/nanopart/visa/server/service/impl/ChangeRecordRelationServiceImpl.java b/visa/visa-server/src/main/java/cn/axzo/nanopart/visa/server/service/impl/ChangeRecordRelationServiceImpl.java
index 9e71b0a5..6bd9b555 100644
--- a/visa/visa-server/src/main/java/cn/axzo/nanopart/visa/server/service/impl/ChangeRecordRelationServiceImpl.java
+++ b/visa/visa-server/src/main/java/cn/axzo/nanopart/visa/server/service/impl/ChangeRecordRelationServiceImpl.java
@@ -356,7 +356,9 @@ public class ChangeRecordRelationServiceImpl extends ServiceImpl<ChangeRecordRel
                     .visaId(req.getVisaId())
                     .varName(VisaRelationFieldEnum.ATTACHMENT.name())
                     .build());
-            formUpdateDto.setFormVariables(Maps.of(FORM_FIELD_ATTACH, relations.stream().map(ChangeRecordRelation::getContent).collect(Collectors.toList())));
+
+            List<UploadFieldDTO> attachments = relations.stream().map(i -> JSON.parseObject(i.getContent(), UploadFieldDTO.class)).collect(Collectors.toList());
+            formUpdateDto.setFormVariables(Maps.of(FORM_FIELD_ATTACH, JSON.toJSONString(attachments)));
             workflowGateway.updateInstanceFormData(formUpdateDto);
         }
         //单独上传附件-追加操作日志