diff --git a/src/App.vue b/src/App.vue
index 559f1a6..8286cc0 100644
--- a/src/App.vue
+++ b/src/App.vue
@@ -9,7 +9,6 @@
 <script>
 import ThemePicker from "@/components/ThemePicker";
 import AlmModal from "@/components/AlmModal";
-import {ElMessage} from 'element-ui'
 
 export default {
   name: "App",
@@ -363,11 +362,12 @@ export default {
     },
     selectOffLineDevice() {
       Object.keys(this.isOnline).forEach(key => {
-          if (this.isOnline[key] - new Date().getTime() > 1000 * 60 * 30) {
-            this.$message({
-              type: `error`,
-              message: `设备${key}已离线`
-            });
+          if (new Date().getTime() - this.isOnline[key] > (1000 * 60 * 30)) {
+            this.$confirm(`设备${key}已离线`, '设备离线', {
+              cancelButtonText: '关闭',
+              showConfirmButton: false,
+              type: 'error'
+            })
             this.isOnline[key] = new Date().getTime()
           }
         }