diff --git a/api/app/lib/controllers/project/group.js b/api/app/lib/controllers/project/group.js
index 02fd38d..f47cd73 100644
--- a/api/app/lib/controllers/project/group.js
+++ b/api/app/lib/controllers/project/group.js
@@ -319,7 +319,8 @@ async function groupStatisticOnline (ctx) {
       const maxOfflineTimeRes = strucIdArr.length ? await models.StructureOff.findAll({
          where: {
             structure: { $in: strucIdArr },
-            state: 0
+            state: 0,
+            offline: { $gt: 720 }
          }
       }) : []