diff --git a/internal/web/ui/templates/alarms.html b/internal/web/ui/templates/alarms.html
index 79ed051..0b2301d 100644
--- a/internal/web/ui/templates/alarms.html
+++ b/internal/web/ui/templates/alarms.html
@@ -15,6 +15,7 @@
     <input type="date" name="to" value="{{.SelectedTo}}" style="width:150px;font-size:12px">
     <button class="btn" style="font-size:12px;padding:4px 12px">筛选</button>
     <a href="/ui/alarms" class="btn ghost" style="font-size:11px">今天</a>
+    <a href="/ui/alarms?from=2000-01-01&to=2099-12-31" class="btn ghost" style="font-size:11px">全部</a>
   </form>
 
   <div class="table-wrap">
@@ -69,7 +70,7 @@
     {{else}}
     <div class="empty-state">
       <div class="empty-title">暂无告警记录</div>
-      <div class="muted">所选日期范围内没有告警，或设备尚未上报。</div>
+      <div class="muted">所选日期范围内没有告警。点击右上角"全部"查看所有记录，或设备尚未上报。</div>
     </div>
     {{end}}
   </div>