diff --git a/app/Http/Controllers/Admin/PlatformOrderController.php b/app/Http/Controllers/Admin/PlatformOrderController.php
index 6928e15..9c1e91d 100644
--- a/app/Http/Controllers/Admin/PlatformOrderController.php
+++ b/app/Http/Controllers/Admin/PlatformOrderController.php
@@ -31,6 +31,7 @@ class PlatformOrderController extends Controller
         $defaults = [
             'merchant_id' => (int) $request->query('merchant_id', 0),
             'plan_id' => (int) $request->query('plan_id', 0),
+            'site_subscription_id' => (int) $request->query('site_subscription_id', 0),
             'order_type' => (string) $request->query('order_type', 'new_purchase'),
             'quantity' => (int) $request->query('quantity', 1),
             'discount_amount' => (float) $request->query('discount_amount', 0),
@@ -54,6 +55,7 @@ class PlatformOrderController extends Controller
         $data = $request->validate([
             'merchant_id' => ['required', 'integer', 'exists:merchants,id'],
             'plan_id' => ['required', 'integer', 'exists:plans,id'],
+            'site_subscription_id' => ['nullable', 'integer', 'exists:site_subscriptions,id'],
             'order_type' => ['required', Rule::in(array_keys($this->orderTypeLabels()))],
             'quantity' => ['required', 'integer', 'min:1', 'max:120'],
             'discount_amount' => ['nullable', 'numeric', 'min:0'],
@@ -80,6 +82,7 @@ class PlatformOrderController extends Controller
         $order = PlatformOrder::query()->create([
             'merchant_id' => (int) $data['merchant_id'],
             'plan_id' => $plan->id,
+            'site_subscription_id' => (int) ($data['site_subscription_id'] ?? 0) ?: null,
             'created_by_admin_id' => $admin->id,
             'order_no' => $orderNo,
             'order_type' => (string) $data['order_type'],
diff --git a/resources/views/admin/platform_orders/form.blade.php b/resources/views/admin/platform_orders/form.blade.php
index 5cb8ecb..f2d202d 100644
--- a/resources/views/admin/platform_orders/form.blade.php
+++ b/resources/views/admin/platform_orders/form.blade.php
@@ -12,6 +12,8 @@
 <form method="post" action="/admin/platform-orders" class="card form-grid">
     @csrf
 
+    <input type="hidden" name="site_subscription_id" value="{{ old('site_subscription_id', $defaults['site_subscription_id'] ?? '') }}">
+
     <label>
         <span>站点</span>
         <select name="merchant_id" required>
diff --git a/resources/views/admin/site_subscriptions/show.blade.php b/resources/views/admin/site_subscriptions/show.blade.php
index 896e735..438463f 100644
--- a/resources/views/admin/site_subscriptions/show.blade.php
+++ b/resources/views/admin/site_subscriptions/show.blade.php
@@ -110,6 +110,7 @@
                 $createRenewalOrderUrl = '/admin/platform-orders/create?' . \Illuminate\Support\Arr::query([
                     'merchant_id' => $subscription->merchant_id,
                     'plan_id' => $subscription->plan_id,
+                    'site_subscription_id' => $subscription->id,
                     'order_type' => 'renewal',
                     'quantity' => 1,
                     'remark' => '来自订阅：' . $subscription->subscription_no,
diff --git a/tests/Feature/AdminSiteSubscriptionShowTest.php b/tests/Feature/AdminSiteSubscriptionShowTest.php
index de7624f..35f7a4f 100644
--- a/tests/Feature/AdminSiteSubscriptionShowTest.php
+++ b/tests/Feature/AdminSiteSubscriptionShowTest.php
@@ -138,7 +138,7 @@ class AdminSiteSubscriptionShowTest extends TestCase
             ->assertSee('失败原因')
             ->assertSee('查看关联平台订单（按订阅ID精确过滤）')
             ->assertSee('查看可同步订单')
-            ->assertSee('/admin/platform-orders/create?merchant_id=' . $merchant->id . '&plan_id=' . $plan->id, false);
+            ->assertSee('/admin/platform-orders/create?merchant_id=' . $merchant->id . '&plan_id=' . $plan->id . '&site_subscription_id=' . $sub->id, false);
     }
 
     public function test_guest_cannot_open_site_subscription_show_page(): void