diff --git a/src/views/device/alerts/index.vue b/src/views/device/alerts/index.vue
index 5d86479..6dbc2be 100644
--- a/src/views/device/alerts/index.vue
+++ b/src/views/device/alerts/index.vue
@@ -23,8 +23,8 @@ const getSiteList = async () => {
 
 // 日期选择器相关
 const now = dayjs()
-const startOfToday = now.startOf('day')
-const dateRange = ref<[any, any]>([startOfToday, now])
+const startOfMonth = now.startOf('month')
+const dateRange = ref<[any, any]>([startOfMonth, now])
 
 // 告警相关
 const activeMainTab = ref('Alerts')