diff --git a/src/layouts/MainLayout.vue b/src/layouts/MainLayout.vue
index ea3f06f..92005f7 100644
--- a/src/layouts/MainLayout.vue
+++ b/src/layouts/MainLayout.vue
@@ -220,6 +220,7 @@ let alertDeviceList: DeviceConfigItem[] = [];
 
 async function searchAlertDevice() {
   try {
+    optionsAlertDevice.value = [];
     const type = (saveAlertTypeData as never)[alertType.value];
     alertDeviceList = await getDeviceByAlarmType(3, type);
     optionsAlertDevice.value = alertDeviceList.map((item) => item.name);