diff --git a/pages/home/control/automatic.vue b/pages/home/control/automatic.vue
index e3edf60..bb104f7 100644
--- a/pages/home/control/automatic.vue
+++ b/pages/home/control/automatic.vue
@@ -864,6 +864,13 @@ export default {
             "操作提示");
         return;
       }
+      // 300/2.13
+      const isValidTotalLen = this.rollerParam.manualTotalLen > 300 || this.rollerParam.autoTotalLen > 300;
+      if (isValidTotalLen) {
+        this.$modal.alert(`风口长度设置不能大于300cm！`,
+            "操作提示");
+        return;
+      }
       if (!(this.rollerParam.reservedLen && this.rollerParam.reservedLen > 0)) {
         this.$modal.alert(`请填写预留风口！`,
             "操作提示");
@@ -948,6 +955,11 @@ export default {
           validate: (rollerParam, term) => !((rollerParam.manualTotalLen && rollerParam.manualTotalLen > 0) ||
               (rollerParam.autoTotalLen && rollerParam.autoTotalLen > 0))
         },
+        {
+          tip: '风口长度设置不能大于300cm！',
+          validate: (rollerParam, term) => (rollerParam.manualTotalLen && rollerParam.manualTotalLen > 300) ||
+              (rollerParam.autoTotalLen && rollerParam.autoTotalLen > 300)
+        },
         {
           tip: '预留风口长度未设置，请点击相应页签右上角设置后重试！',
           validate: (rollerParam, term) => !(rollerParam.reservedLen && rollerParam.reservedLen > 0)
diff --git a/pages/index.vue b/pages/index.vue
index eaee265..2a6a431 100644
--- a/pages/index.vue
+++ b/pages/index.vue
@@ -96,6 +96,7 @@ import TimeUtil from "../utils/TimeUtil";
 import {getNewSpecialData} from "../api/data/specialData";
 import AddAgri from "../components/addAgri/addAgri.vue";
 import {removeAgri} from "../api/system/assets/userAgri";
+import * as mqttUtil from "../utils/mqtt";
 
 export default {
   computed: {
@@ -135,32 +136,33 @@ export default {
       // vertical: 'bottom',
       // direction: 'horizontal',
       searchValue: null,
-     /* pattern: {
-        color: '#7A7E83',
-        backgroundColor: '#fff',
-        selectedColor: '#007AFF',
-        buttonColor: '#007AFF',
-        iconColor: '#fff'
-      },
-      content: [{
-        iconPath: '/static/image.png',
-        selectedIconPath: '/static/image-active.png',
-        text: '添加大棚',
-        active: false
-      },
-        {
-          iconPath: '/static/home.png',
-          selectedIconPath: '/static/home-active.png',
-          text: '',
-          active: false
-        },
-        {
-          iconPath: '/static/star.png',
-          selectedIconPath: '/static/star-active.png',
-          text: '收藏',
-          active: false
-        }
-      ]*/
+      imeiToDeviceMap: new Map(),
+      /* pattern: {
+         color: '#7A7E83',
+         backgroundColor: '#fff',
+         selectedColor: '#007AFF',
+         buttonColor: '#007AFF',
+         iconColor: '#fff'
+       },
+       content: [{
+         iconPath: '/static/image.png',
+         selectedIconPath: '/static/image-active.png',
+         text: '添加大棚',
+         active: false
+       },
+         {
+           iconPath: '/static/home.png',
+           selectedIconPath: '/static/home-active.png',
+           text: '',
+           active: false
+         },
+         {
+           iconPath: '/static/star.png',
+           selectedIconPath: '/static/star-active.png',
+           text: '收藏',
+           active: false
+         }
+       ]*/
     }
 
   },
@@ -172,12 +174,15 @@ export default {
     return false*/
   },
   onShow() {
-
+    mqttUtil.setOnMessageCallback(this.ackMessage);
   },
   onLoad() {
     this.$modal.loading("数据加载中，请耐心等待...")
     this.refresh();
   },
+  onHide() {
+    mqttUtil.removeOnMessageCallback();
+  },
   onReady() {
 
   },
@@ -239,23 +244,27 @@ export default {
 
       getAgriInfo().then(response => {
         if (response.code === 200) {
+          // 先清空旧索引
+          this.imeiToDeviceMap.clear();
           // 1. 用 map 处理数据，返回新数组，避免 forEach 返回 undefined
           // 2. 区分刷新/加载更多，更新 listData
           this.listData = response.data.map(item => {
-            // 返回完整的列表项结构（和模板中需要的字段对应）
-            return {
+            const deviceItem = {
               ...item,
               deviceStatus: TimeUtil.isLessThanSpecifiedSeconds(item.time, 90) ? '在线' : '离线',
-              online: TimeUtil.isLessThanSpecifiedSeconds(item.time, 90) ? '在线' : '离线', // 兼容模板中的 online 字段
+              online: TimeUtil.isLessThanSpecifiedSeconds(item.time, 90) ? '在线' : '离线',
               agriName: item.agriName || '未知大棚',
               imei: `${item.imei || '未知'}`,
-              workModeDesc: item.workMode === 0? '手动模式':'自动模式',
+              workModeDesc: item.workMode === 0 ? '手动模式':'自动模式',
               workMode: item.workMode,
               temp1: item.temp1,
               temp2: item.temp2,
               temp3: item.temp3,
               temp4: item.temp4
             };
+            // 存入索引Map
+            this.imeiToDeviceMap.set(deviceItem.imei, deviceItem);
+            return deviceItem;
           });
           // 5. 判断是否还有更多数据
           this.noMore = this.listData.length >= this.total;
@@ -280,6 +289,7 @@ export default {
       }
     },
     refresh() {
+      mqttUtil.setOnMessageCallback(this.ackMessage);
       this.getListData();
     },
     onDeleteItem(item, agri) {
@@ -358,6 +368,33 @@ export default {
           },
       )
     },
+    ackMessage(topic, payload) {
+      const regex2 = /^device\/\d+\/status$/;
+      if (!regex2.test(topic)) return;
+
+      let msgData = {};
+      // 优化：捕获JSON解析异常
+      try {
+        msgData = JSON.parse(payload);
+      } catch (e) {
+        console.error("MQTT消息解析失败：", e, payload);
+        return;
+      }
+      // 设备在线状态
+      if (msgData.online && "time" in msgData && "imei" in msgData) {
+        this.updateDeviceStatusFast(msgData.imei, msgData.online)
+      }
+    },
+    updateDeviceStatusFast(targetImei, isOnline) {
+      // 直接从Map里取设备项，无需遍历数组
+      const targetDevice = this.imeiToDeviceMap.get(targetImei);
+      if (!targetDevice) return;
+
+      const statusText = isOnline ? '在线' : '离线';
+      // 直接修改对象属性，响应式正常生效
+      targetDevice.deviceStatus = statusText;
+      targetDevice.online = statusText;
+    }
   }
 }
 </script>
diff --git a/utils/mqtt.js b/utils/mqtt.js
index 6d4cc07..45b6b4c 100644
--- a/utils/mqtt.js
+++ b/utils/mqtt.js
@@ -345,6 +345,7 @@ export function updateSubscribeTopic() {
             response.rows.forEach(item => {
                 if (item?.imei) {
                     subscribeList.push(`frontend/${clientId}/dtu/${item.imei}/+`);
+                    subscribeList.push(`device/${item.imei}/+`);
                 }
             });
             // 管理员额外订阅指定设备