diff --git a/ruoyi-bussiness/src/main/java/com/ruoyi/cms/service/impl/AppNoticeServiceImpl.java b/ruoyi-bussiness/src/main/java/com/ruoyi/cms/service/impl/AppNoticeServiceImpl.java
index 3bed788..50523a2 100644
--- a/ruoyi-bussiness/src/main/java/com/ruoyi/cms/service/impl/AppNoticeServiceImpl.java
+++ b/ruoyi-bussiness/src/main/java/com/ruoyi/cms/service/impl/AppNoticeServiceImpl.java
@@ -225,7 +225,7 @@ public class AppNoticeServiceImpl implements IAppNoticeService
             Notice parmNotice = notices1.get(0);
             Notice notice=new Notice();
             notice.setNoticeId(parmNotice.getNoticeId());
-            notice.setNotReadCount(parmNotice.getNotReadCount()!=null?parmNotice.getNotReadCount() - longs.size():0);
+            notice.setNotReadCount(parmNotice.getNotReadCount()!=null&&parmNotice.getNotReadCount()!=0?parmNotice.getNotReadCount() - longs.size():0);
             if(notice.getNotReadCount()==0){
                 notice.setIsRead(NoticeUtils.NOTICE_YD);
             }