diff --git a/src/main/java/com/ydool/boot/modules/rddb/service/ConferenceAttachmentService.java b/src/main/java/com/ydool/boot/modules/rddb/service/ConferenceAttachmentService.java
index 332715f..1aad822 100644
--- a/src/main/java/com/ydool/boot/modules/rddb/service/ConferenceAttachmentService.java
+++ b/src/main/java/com/ydool/boot/modules/rddb/service/ConferenceAttachmentService.java
@@ -64,6 +64,7 @@ public class ConferenceAttachmentService extends BaseTreeService<ConferenceAttac
                     .build();
             conferenceAttachment2.setCreatedAt(LocalDateTime.now());
             conferenceAttachment2.setUpdatedAt(LocalDateTime.now());
+            conferenceAttachment2.setSortNo(9999);
             flag = saveOrUpdate(conferenceAttachment2);
 
             System.out.println(conferenceAttachment2);