diff --git a/epdc-cloud-property/src/main/resources/mapper/activity/ActivityInfoDao.xml b/epdc-cloud-property/src/main/resources/mapper/activity/ActivityInfoDao.xml
index ecd26f7..1bb6893 100644
--- a/epdc-cloud-property/src/main/resources/mapper/activity/ActivityInfoDao.xml
+++ b/epdc-cloud-property/src/main/resources/mapper/activity/ActivityInfoDao.xml
@@ -43,7 +43,7 @@
             a.ACT_QUOTA_FLAG,
             a.ACT_QUOTA,
             a.SIGN_UP_NUM,
-            ( CASE WHEN p.id IS NULL THEN '0' ELSE '1' END ) AS SIGN_UP_FLAG
+            ( CASE WHEN p.id IS NOT NULL THEN '0' ELSE '1' END ) AS SIGN_UP_FLAG
         FROM
             epdc_activity_info a
             LEFT JOIN epdc_section_category s ON a.CATEGORY_CODE = s. CODE