diff --git a/resources/views/admin/site_subscriptions/show.blade.php b/resources/views/admin/site_subscriptions/show.blade.php
index 4b586cc..1d09a54 100644
--- a/resources/views/admin/site_subscriptions/show.blade.php
+++ b/resources/views/admin/site_subscriptions/show.blade.php
@@ -9,10 +9,18 @@
     // 注意：这里使用相对路径，避免测试/不同 APP_URL 环境下生成绝对域名导致断言与展示不一致
     // 同时：自动附带 back 参数，保证“从订阅详情跳到订单列表/治理后能回到订阅详情并保留上下文”
     $platformOrdersBaseUrl = '/admin/platform-orders';
-    $backToSubscriptionShow = request()->getRequestUri();
-    $makePlatformOrderUrl = function (array $query) use ($platformOrdersBaseUrl, $backToSubscriptionShow) {
-        // 若调用方显式传了 back，则不覆盖；否则默认回到当前订阅详情页
-        $query = $query + ['back' => $backToSubscriptionShow];
+
+    // back 参数用于“返回上一页（保留上下文）”，但 back 本身不应再包含 back（避免无限嵌套导致 URL 膨胀）
+    $currentQuery = request()->query();
+    unset($currentQuery['back']);
+    $selfWithoutBack = '/' . ltrim(request()->path(), '/');
+    if (count($currentQuery) > 0) {
+        $selfWithoutBack .= '?' . \Illuminate\Support\Arr::query($currentQuery);
+    }
+
+    $makePlatformOrderUrl = function (array $query) use ($platformOrdersBaseUrl, $selfWithoutBack) {
+        // 若调用方显式传了 back，则不覆盖；否则默认回到当前订阅详情页（剔除 back，避免嵌套）
+        $query = $query + ['back' => $selfWithoutBack];
 
         return $platformOrdersBaseUrl . '?' . \Illuminate\Support\Arr::query($query);
     };
@@ -305,7 +313,7 @@
         <span class="muted">｜</span>
         <a href="?order_sync_status=syncable" class="muted">可同步</a>
         <span class="muted">｜</span>
-        <a href="/admin/platform-orders?site_subscription_id={{ $subscription->id }}&back={{ urlencode(request()->getRequestUri()) }}" class="muted">在平台订单页打开</a>
+        <a href="/admin/platform-orders?site_subscription_id={{ $subscription->id }}&back={{ urlencode($selfWithoutBack) }}" class="muted">在平台订单页打开</a>
         @if($cur)
             <span class="muted">（当前：{{ $cur }}）</span>
         @endif
@@ -342,7 +350,7 @@
             @endphp
             <tr>
                 <td>{{ $order->id }}</td>
-                <td><a href="/admin/platform-orders/{{ $order->id }}?back={{ urlencode(request()->getRequestUri()) }}">{{ $order->order_no }}</a></td>
+                <td><a href="/admin/platform-orders/{{ $order->id }}?back={{ urlencode($selfWithoutBack) }}">{{ $order->order_no }}</a></td>
                 <td>{{ $order->status }}</td>
                 <td>{{ $order->payment_status }}</td>
                 <td>¥{{ number_format((float) $order->payable_amount, 2) }} / ¥{{ number_format((float) $order->paid_amount, 2) }}</td>
@@ -360,7 +368,7 @@
                     @endif
                 </td>
                 <td>
-                    <a href="/admin/platform-orders/{{ $order->id }}?back={{ urlencode(request()->getRequestUri()) }}">详情</a>
+                    <a href="/admin/platform-orders/{{ $order->id }}?back={{ urlencode($selfWithoutBack) }}">详情</a>
                 </td>
             </tr>
         @empty