diff --git a/app/alerts/page.tsx b/app/alerts/page.tsx
index 0dca775..78ccaaf 100644
--- a/app/alerts/page.tsx
+++ b/app/alerts/page.tsx
@@ -49,7 +49,14 @@ export default function AlertsPage() {
   const [checking, setChecking] = useState(false);
   const [checkResults, setCheckResults] = useState<string[]>([]);
   const [lastCheckTime, setLastCheckTime] = useState<string>("");
-  const [checkInterval, setCheckInterval] = useState(10); // 默认 10 分钟检查一次
+  const [checkInterval, setCheckInterval] = useState(10);
+
+  // 从配置加载 checkInterval
+  useEffect(() => {
+    if (config?.checkInterval) {
+      setCheckInterval(config.checkInterval);
+    }
+  }, [config?.checkInterval]);
 
   const ruleDescriptions = RULE_DESCRIPTIONS[locale as keyof typeof RULE_DESCRIPTIONS] || RULE_DESCRIPTIONS.zh;
 
@@ -138,6 +145,24 @@ export default function AlertsPage() {
       .finally(() => setSaving(false));
   };
 
+  const handleIntervalChange = (value: number) => {
+    if (!config) return;
+    setCheckInterval(value);
+    setSaving(true);
+    fetch("/api/alerts", {
+      method: "PUT",
+      headers: { "Content-Type": "application/json" },
+      body: JSON.stringify({ checkInterval: value }),
+    })
+      .then((r) => r.json())
+      .then((newConfig) => {
+        setConfig(newConfig);
+        setSaved(true);
+        setTimeout(() => setSaved(false), 2000);
+      })
+      .finally(() => setSaving(false));
+  };
+
   const handleRuleToggle = (ruleId: string) => {
     if (!config) return;
     const rules = config.rules.map((r) =>
@@ -212,13 +237,16 @@ export default function AlertsPage() {
               <span className="text-xs text-[var(--text-muted)]">{t("alerts.checkInterval") || "Check Interval"}:</span>
               <select
                 value={checkInterval}
-                onChange={(e) => setCheckInterval(Number(e.target.value))}
+                onChange={(e) => handleIntervalChange(Number(e.target.value))}
                 className="px-2 py-1 text-sm rounded border border-[var(--border)] bg-[var(--card)] text-[var(--text)]"
               >
                 <option value={1}>{locale === "zh" ? "1 分钟" : "1 minute"}</option>
                 <option value={5}>{locale === "zh" ? "5 分钟" : "5 minutes"}</option>
                 <option value={10}>{locale === "zh" ? "10 分钟" : "10 minutes"}</option>
                 <option value={30}>{locale === "zh" ? "30 分钟" : "30 minutes"}</option>
+                <option value={60}>{locale === "zh" ? "1 小时" : "1 hour"}</option>
+                <option value={120}>{locale === "zh" ? "2 小时" : "2 hours"}</option>
+                <option value={300}>{locale === "zh" ? "5 小时" : "5 hours"}</option>
               </select>
             </div>
           )}
diff --git a/app/api/alerts/route.ts b/app/api/alerts/route.ts
index ae25055..16222cf 100644
--- a/app/api/alerts/route.ts
+++ b/app/api/alerts/route.ts
@@ -16,6 +16,7 @@ interface AlertRule {
 interface AlertConfig {
   enabled: boolean;
   receiveAgent: string; // 接收告警的 agent ID
+  checkInterval: number; // 检查间隔（分钟）
   rules: AlertRule[];
   lastAlerts?: Record<string, number>; // 上次告警时间戳
 }
@@ -37,6 +38,7 @@ function getAlertConfig(): AlertConfig {
   return {
     enabled: false,
     receiveAgent: "main",
+    checkInterval: 10,
     rules: DEFAULT_RULES,
     lastAlerts: {},
   };
@@ -76,6 +78,7 @@ export async function PUT(request: Request) {
     
     if (body.enabled !== undefined) config.enabled = body.enabled;
     if (body.receiveAgent) config.receiveAgent = body.receiveAgent;
+    if (body.checkInterval !== undefined) config.checkInterval = body.checkInterval;
     if (body.rules) {
       // 合并规则配置
       for (const newRule of body.rules) {