diff --git a/src/utils/mqtt/index.js b/src/utils/mqtt/index.js
index fbd1da7..59580fe 100644
--- a/src/utils/mqtt/index.js
+++ b/src/utils/mqtt/index.js
@@ -54,13 +54,7 @@ function doSubscribe (topic, callBack) {
     }
     store.state.app.mqttState = true // 标记mqtt链接成功 在线
     // 订阅一个主题
-    this.client.subscribe(topic, { qos: 2 }, err => {
-      if (!err) {
-        store.dispatch('fetchLog', { content: topic + '主题订阅成功' })
-      } else {
-        store.dispatch('fetchLog', { content: topic + '主题订阅失败' })
-      }
-    })
+    this.client.subscribe(topic, { qos: 2 })
   })
   // 获取订阅主题的消息
   this.client.on('message', (topic, message) => {
diff --git a/src/views/layout/index.vue b/src/views/layout/index.vue
index 53d4283..42dc851 100644
--- a/src/views/layout/index.vue
+++ b/src/views/layout/index.vue
@@ -76,6 +76,7 @@ export default {
      */
     airList (res) {
       /* mqtt */
+      mqtt.mqttDestroy()// 先断开mqtt
       mqtt.mqttConf()// 连接mqtt
       // 订阅飞机信息
       mqtt.doSubscribe('planeState/+', (mqttRes) => {