diff --git a/AliyunService.php b/AliyunService.php
index 3a60a3f..1bd37c5 100644
--- a/AliyunService.php
+++ b/AliyunService.php
@@ -89,12 +89,13 @@ class AliyunService
 
     /**
      * 获取 BSS 费用中心 API 的 regionId 和 endpoint
-     * 中国站（国内区域）: cn-hangzhou + business.aliyuncs.com
-     * 国际站（海外区域）: ap-southeast-1 + business.ap-southeast-1.aliyuncs.com
+     * 中国站: cn-hangzhou + business.aliyuncs.com
+     * 国际站: ap-southeast-1 + business.ap-southeast-1.aliyuncs.com
+     * @param string $siteType 'china' 或 'international'
      */
-    private function getBssEndpoint($targetRegion)
+    private function getBssEndpoint($siteType = 'china')
     {
-        if ($this->isOverseas($targetRegion)) {
+        if ($siteType === 'international') {
             return [
                 'regionId' => 'ap-southeast-1',
                 'host'     => 'business.ap-southeast-1.aliyuncs.com'
@@ -257,14 +258,14 @@ class AliyunService
      * @return array ['AvailableAmount' => '...', 'Currency' => 'CNY']
      * @throws \Exception
      */
-    public function getAccountBalance($key, $secret, $targetRegion = 'cn-hangzhou')
+    public function getAccountBalance($key, $secret, $siteType = 'china')
     {
         $cacheKey = md5($key);
         if (isset($this->balanceCache[$cacheKey])) {
             return $this->balanceCache[$cacheKey];
         }
 
-        $bss = $this->getBssEndpoint($targetRegion);
+        $bss = $this->getBssEndpoint($siteType);
 
         $result = $this->executeWithRetry(function () use ($key, $secret, $bss) {
             AlibabaCloud::accessKeyClient($key, $secret)
@@ -303,9 +304,9 @@ class AliyunService
      * @return array ['TotalCost' => float, 'Items' => [...]]
      * @throws \Exception
      */
-    public function getInstanceBill($key, $secret, $instanceId, $billingCycle, $targetRegion = 'cn-hangzhou')
+    public function getInstanceBill($key, $secret, $instanceId, $billingCycle, $siteType = 'china')
     {
-        $bss = $this->getBssEndpoint($targetRegion);
+        $bss = $this->getBssEndpoint($siteType);
 
         $result = $this->executeWithRetry(function () use ($key, $secret, $instanceId, $billingCycle, $bss) {
             AlibabaCloud::accessKeyClient($key, $secret)
@@ -363,9 +364,9 @@ class AliyunService
      * @return array ['TotalCost' => float, 'Products' => [...]]
      * @throws \Exception
      */
-    public function getBillOverview($key, $secret, $billingCycle, $targetRegion = 'cn-hangzhou')
+    public function getBillOverview($key, $secret, $billingCycle, $siteType = 'china')
     {
-        $bss = $this->getBssEndpoint($targetRegion);
+        $bss = $this->getBssEndpoint($siteType);
 
         $result = $this->executeWithRetry(function () use ($key, $secret, $billingCycle, $bss) {
             AlibabaCloud::accessKeyClient($key, $secret)
diff --git a/AliyunTrafficCheck.php b/AliyunTrafficCheck.php
index d2e6feb..be55517 100644
--- a/AliyunTrafficCheck.php
+++ b/AliyunTrafficCheck.php
@@ -159,7 +159,8 @@ class AliyunTrafficCheck
                     'startTime' => $row['start_time'],
                     'stopTime' => $row['stop_time']
                 ],
-                'remark' => $row['remark'] ?? ''
+                'remark' => $row['remark'] ?? '',
+                'siteType' => $row['site_type'] ?? 'china'
             ];
         }
 
@@ -549,7 +550,7 @@ class AliyunTrafficCheck
                     $balance = $this->aliyunService->getAccountBalance(
                         $targetAccount['access_key_id'],
                         $targetAccount['access_key_secret'],
-                        $targetAccount['region_id']
+                        $targetAccount['site_type'] ?? 'china'
                     );
                     $this->db->setBillingCache($targetAccount['id'], 'balance', '', $balance);
                 } catch (\Exception $e) {
@@ -567,7 +568,7 @@ class AliyunTrafficCheck
                             $targetAccount['access_key_secret'],
                             $targetAccount['instance_id'],
                             $billingCycle,
-                            $targetAccount['region_id']
+                            $targetAccount['site_type'] ?? 'china'
                         );
                         $this->db->setBillingCache($targetAccount['id'], 'instance_bill', $billingCycle, $bill);
                     } catch (\Exception $e) {
@@ -721,7 +722,7 @@ class AliyunTrafficCheck
                 $balance = $this->aliyunService->getAccountBalance(
                     $account['access_key_id'],
                     $account['access_key_secret'],
-                    $account['region_id']
+                    $account['site_type'] ?? 'china'
                 );
                 $costInfo['balance'] = $balance['AvailableAmount'];
                 $costInfo['currency'] = $balance['Currency'] ?? 'CNY';
@@ -743,7 +744,7 @@ class AliyunTrafficCheck
                         $account['access_key_secret'],
                         $account['instance_id'],
                         $billingCycle,
-                        $account['region_id']
+                        $account['site_type'] ?? 'china'
                     );
                     $costInfo['monthly_cost'] = $bill['TotalCost'];
                     $this->db->setBillingCache($account['id'], 'instance_bill', $billingCycle, $bill);
diff --git a/ConfigManager.php b/ConfigManager.php
index 0597de6..112e67e 100644
--- a/ConfigManager.php
+++ b/ConfigManager.php
@@ -135,8 +135,8 @@ class ConfigManager
             }
 
             $keptIds = [];
-            $insertStmt = $this->db->prepare("INSERT INTO accounts (access_key_id, access_key_secret, region_id, instance_id, max_traffic, schedule_enabled, start_time, stop_time, remark, traffic_used, instance_status, updated_at, last_keep_alive_at) VALUES (?, ?, ?, ?, ?, ?, ?, ?, ?, 0, 'Unknown', 0, 0)");
-            $updateStmt = $this->db->prepare("UPDATE accounts SET access_key_secret = ?, region_id = ?, instance_id = ?, max_traffic = ?, schedule_enabled = ?, start_time = ?, stop_time = ?, remark = ? WHERE id = ?");
+            $insertStmt = $this->db->prepare("INSERT INTO accounts (access_key_id, access_key_secret, region_id, instance_id, max_traffic, schedule_enabled, start_time, stop_time, remark, site_type, traffic_used, instance_status, updated_at, last_keep_alive_at) VALUES (?, ?, ?, ?, ?, ?, ?, ?, ?, ?, 0, 'Unknown', 0, 0)");
+            $updateStmt = $this->db->prepare("UPDATE accounts SET access_key_secret = ?, region_id = ?, instance_id = ?, max_traffic = ?, schedule_enabled = ?, start_time = ?, stop_time = ?, remark = ?, site_type = ? WHERE id = ?");
 
             foreach ($newAccounts as $acc) {
                 $key = $acc['AccessKeyId'];
@@ -152,7 +152,8 @@ class ConfigManager
                     ($acc['schedule']['enabled'] ?? false) ? 1 : 0,
                     $acc['schedule']['startTime'] ?? '',
                     $acc['schedule']['stopTime'] ?? '',
-                    $acc['remark'] ?? ''
+                    $acc['remark'] ?? '',
+                    $acc['siteType'] ?? 'china'
                 ];
 
                 if (isset($existingMap[$compositeKey])) {
@@ -207,7 +208,7 @@ class ConfigManager
                 $this->db->exec("DELETE FROM accounts");
                 $this->db->exec("DELETE FROM sqlite_sequence WHERE name='accounts'");
 
-                $insertStmt = $this->db->prepare("INSERT INTO accounts (id, access_key_id, access_key_secret, region_id, instance_id, max_traffic, schedule_enabled, start_time, stop_time, remark, traffic_used, instance_status, updated_at, last_keep_alive_at) VALUES (?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?)");
+                $insertStmt = $this->db->prepare("INSERT INTO accounts (id, access_key_id, access_key_secret, region_id, instance_id, max_traffic, schedule_enabled, start_time, stop_time, remark, site_type, traffic_used, instance_status, updated_at, last_keep_alive_at) VALUES (?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?)");
 
                 $newId = 1;
                 foreach ($rows as $row) {
@@ -222,6 +223,7 @@ class ConfigManager
                         $row['start_time'],
                         $row['stop_time'],
                         $row['remark'] ?? '',
+                        $row['site_type'] ?? 'china',
                         $row['traffic_used'],
                         $row['instance_status'],
                         $row['updated_at'],
diff --git a/Database.php b/Database.php
index c42a033..72b0148 100644
--- a/Database.php
+++ b/Database.php
@@ -137,6 +137,7 @@ class Database
         $this->ensureColumn('accounts', 'updated_at', 'INTEGER DEFAULT 0');
         $this->ensureColumn('accounts', 'last_keep_alive_at', 'INTEGER DEFAULT 0');
         $this->ensureColumn('accounts', 'remark', "TEXT DEFAULT ''");
+        $this->ensureColumn('accounts', 'site_type', "TEXT DEFAULT 'china'");
 
         $this->migrateStatsToAccountId();
     }
diff --git a/template.html b/template.html
index 2e15639..baa1b0f 100644
--- a/template.html
+++ b/template.html
@@ -801,11 +801,20 @@
                                     </div>
                                 </div>
 
-                                <div class="mt-4 space-y-1">
-                                    <label class="text-xs font-medium text-gray-500 ml-2">备注 <span
-                                            class="text-gray-400">(可选)</span></label>
-                                    <input v-model="acc.remark" placeholder="为该实例添加备注说明"
-                                        class="w-full glass-input rounded-xl px-4 py-2 text-sm">
+                                <div class="mt-4 grid grid-cols-1 md:grid-cols-2 gap-4">
+                                    <div class="space-y-1">
+                                        <label class="text-xs font-medium text-gray-500 ml-2">站点类型</label>
+                                        <select v-model="acc.siteType" class="w-full glass-input rounded-xl px-4 py-2 text-sm appearance-none cursor-pointer">
+                                            <option value="china">中国站 (CNY ¥)</option>
+                                            <option value="international">国际站 (USD $)</option>
+                                        </select>
+                                    </div>
+                                    <div class="space-y-1">
+                                        <label class="text-xs font-medium text-gray-500 ml-2">备注 <span
+                                                class="text-gray-400">(可选)</span></label>
+                                        <input v-model="acc.remark" placeholder="为该实例添加备注说明"
+                                            class="w-full glass-input rounded-xl px-4 py-2 text-sm">
+                                    </div>
                                 </div>
 
                                 <div class="mt-6 pt-4 border-t border-gray-200/50">
@@ -1356,6 +1365,7 @@
                             if (!acc.schedule) acc.schedule = { enabled: false, startTime: '', stopTime: '' };
                             if (typeof acc.maxTraffic === 'undefined') acc.maxTraffic = 200;
                             if (typeof acc.remark === 'undefined') acc.remark = '';
+                            if (typeof acc.siteType === 'undefined') acc.siteType = 'china';
                         });
 
                         if (!data.Notification) {
@@ -1468,7 +1478,7 @@
 
                 const addAccount = () => {
                     if (!config.value.Accounts) config.value.Accounts = [];
-                    config.value.Accounts.push({ AccessKeyId: '', AccessKeySecret: '', maxTraffic: 200, regionId: '', instanceId: '', remark: '', schedule: { enabled: false, startTime: '', stopTime: '' } });
+                    config.value.Accounts.push({ AccessKeyId: '', AccessKeySecret: '', maxTraffic: 200, regionId: '', instanceId: '', remark: '', siteType: 'china', schedule: { enabled: false, startTime: '', stopTime: '' } });
                 };
 
                 const removeAccount = (index) => { if (confirm('确定删除该账号配置？')) config.value.Accounts.splice(index, 1); };