diff --git a/api/app/lib/controllers/project/group.js b/api/app/lib/controllers/project/group.js
index d358602..02fd38d 100644
--- a/api/app/lib/controllers/project/group.js
+++ b/api/app/lib/controllers/project/group.js
@@ -336,7 +336,7 @@ async function groupStatisticOnline (ctx) {
                      {
                         "range": {
                            "collect_time": {
-                              "gte": `${moment().subtract(24, 'hours').format('YYYY-MM-DDTHH:mm:ss.SSS')}Z`,
+                              "gte": `${moment().subtract(32, 'hours').format('YYYY-MM-DDTHH:mm:ss.SSS')}Z`,
                               // "gte": "2023-08-24T08:00:00.000Z",
                            }
                         }
diff --git a/web/client/src/sections/projectGroup/containers/statistic.jsx b/web/client/src/sections/projectGroup/containers/statistic.jsx
index 421bf17..214f159 100644
--- a/web/client/src/sections/projectGroup/containers/statistic.jsx
+++ b/web/client/src/sections/projectGroup/containers/statistic.jsx
@@ -69,6 +69,27 @@ const Statistic = ({ dispatch, actions, user, history, loading, groupStatistic,
          title: '中断时长',
          dataIndex: "maxOffLineTime",
          key: 'maxOffLineTime',
+         render: (text, row) => {
+            let title
+            if (text) {
+               if (text >= 1440 && Math.floor(text / 1440)) title = Math.floor(text / 1440) + "天"
+               if ((text % 1440) >= 60 && Math.floor(text % 1440 / 60)) {
+                  if (title) {
+                     title = title + Math.floor(text % 1440 / 60) + "时"
+                  } else {
+                     title = Math.floor(text % 1440 / 60) + "时"
+                  }
+               }
+               if (text % 1440 % 60) {
+                  if (title) {
+                     title = title + text % 1440 % 60 + "分"
+                  } else {
+                     title = text % 1440 % 60 + "分"
+                  }
+               }
+            }
+            return title || "--"
+         }
       }, {
          title: '今日告警个数',
          dataIndex: "todayAlarms",