diff --git a/app/Http/Controllers/Admin/PlatformOrderController.php b/app/Http/Controllers/Admin/PlatformOrderController.php
index 8f4861e..0e0a0ec 100644
--- a/app/Http/Controllers/Admin/PlatformOrderController.php
+++ b/app/Http/Controllers/Admin/PlatformOrderController.php
@@ -26,6 +26,8 @@ class PlatformOrderController extends Controller
             'payment_status' => trim((string) $request->query('payment_status', '')),
             'merchant_id' => trim((string) $request->query('merchant_id', '')),
             'plan_id' => trim((string) $request->query('plan_id', '')),
+            // 精确过滤：订阅ID（用于从订阅详情页跳转到平台订单列表时锁定范围）
+            'site_subscription_id' => trim((string) $request->query('site_subscription_id', '')),
             'fail_only' => (string) $request->query('fail_only', ''),
             'synced_only' => (string) $request->query('synced_only', ''),
             'sync_status' => trim((string) $request->query('sync_status', '')),
@@ -219,6 +221,8 @@ class PlatformOrderController extends Controller
             'payment_status' => trim((string) $request->query('payment_status', '')),
             'merchant_id' => trim((string) $request->query('merchant_id', '')),
             'plan_id' => trim((string) $request->query('plan_id', '')),
+            // 精确过滤：订阅ID（用于从订阅详情页跳转到平台订单列表时锁定范围）
+            'site_subscription_id' => trim((string) $request->query('site_subscription_id', '')),
             'fail_only' => (string) $request->query('fail_only', ''),
             'synced_only' => (string) $request->query('synced_only', ''),
             'sync_status' => trim((string) $request->query('sync_status', '')),
@@ -333,6 +337,7 @@ class PlatformOrderController extends Controller
             'payment_status' => trim((string) $request->input('payment_status', '')),
             'merchant_id' => trim((string) $request->input('merchant_id', '')),
             'plan_id' => trim((string) $request->input('plan_id', '')),
+            'site_subscription_id' => trim((string) $request->input('site_subscription_id', '')),
             'fail_only' => (string) $request->input('fail_only', ''),
             'synced_only' => (string) $request->input('synced_only', ''),
             'sync_status' => trim((string) $request->input('sync_status', '')),
@@ -458,6 +463,7 @@ class PlatformOrderController extends Controller
             'payment_status' => trim((string) $request->input('payment_status', '')),
             'merchant_id' => trim((string) $request->input('merchant_id', '')),
             'plan_id' => trim((string) $request->input('plan_id', '')),
+            'site_subscription_id' => trim((string) $request->input('site_subscription_id', '')),
             'fail_only' => (string) $request->input('fail_only', ''),
             'synced_only' => (string) $request->input('synced_only', ''),
             'sync_status' => trim((string) $request->input('sync_status', '')),
@@ -514,6 +520,7 @@ class PlatformOrderController extends Controller
             ->when($filters['payment_status'] !== '', fn (Builder $builder) => $builder->where('payment_status', $filters['payment_status']))
             ->when(($filters['merchant_id'] ?? '') !== '', fn (Builder $builder) => $builder->where('merchant_id', (int) $filters['merchant_id']))
             ->when(($filters['plan_id'] ?? '') !== '', fn (Builder $builder) => $builder->where('plan_id', (int) $filters['plan_id']))
+            ->when(($filters['site_subscription_id'] ?? '') !== '', fn (Builder $builder) => $builder->where('site_subscription_id', (int) $filters['site_subscription_id']))
             ->when(($filters['fail_only'] ?? '') !== '', function (Builder $builder) {
                 // 只看同步失败：meta.subscription_activation_error.message 存在即视为失败
                 $builder->whereRaw("JSON_EXTRACT(meta, '$.subscription_activation_error.message') IS NOT NULL");
diff --git a/resources/views/admin/platform_orders/index.blade.php b/resources/views/admin/platform_orders/index.blade.php
index 2097416..b79c170 100644
--- a/resources/views/admin/platform_orders/index.blade.php
+++ b/resources/views/admin/platform_orders/index.blade.php
@@ -42,6 +42,8 @@
             <option value="synced" @selected(($filters['sync_status'] ?? '') === 'synced')>已同步</option>
             <option value="failed" @selected(($filters['sync_status'] ?? '') === 'failed')>同步失败</option>
         </select>
+
+        <input type="number" name="site_subscription_id" placeholder="订阅ID（可选）" value="{{ $filters['site_subscription_id'] ?? '' }}" class="w-140">
         <label class="form-inline-row">
             <input type="checkbox" name="fail_only" value="1" @checked(($filters['fail_only'] ?? '') === '1')>
             <span>只看同步失败</span>
@@ -116,6 +118,7 @@
         <input type="hidden" name="payment_status" value="{{ $filters['payment_status'] ?? '' }}">
         <input type="hidden" name="merchant_id" value="{{ $filters['merchant_id'] ?? '' }}">
         <input type="hidden" name="plan_id" value="{{ $filters['plan_id'] ?? '' }}">
+        <input type="hidden" name="site_subscription_id" value="{{ $filters['site_subscription_id'] ?? '' }}">
         <input type="hidden" name="fail_only" value="{{ $filters['fail_only'] ?? '' }}">
         <input type="hidden" name="synced_only" value="{{ $filters['synced_only'] ?? '' }}">
         <input type="hidden" name="sync_status" value="{{ $filters['sync_status'] ?? '' }}">
@@ -138,6 +141,7 @@
         <input type="hidden" name="payment_status" value="{{ $filters['payment_status'] ?? '' }}">
         <input type="hidden" name="merchant_id" value="{{ $filters['merchant_id'] ?? '' }}">
         <input type="hidden" name="plan_id" value="{{ $filters['plan_id'] ?? '' }}">
+        <input type="hidden" name="site_subscription_id" value="{{ $filters['site_subscription_id'] ?? '' }}">
         <input type="hidden" name="fail_only" value="{{ $filters['fail_only'] ?? '' }}">
         <input type="hidden" name="synced_only" value="{{ $filters['synced_only'] ?? '' }}">
         <input type="hidden" name="sync_status" value="{{ $filters['sync_status'] ?? '' }}">
@@ -162,6 +166,7 @@
         <input type="hidden" name="payment_status" value="{{ $filters['payment_status'] ?? '' }}">
         <input type="hidden" name="merchant_id" value="{{ $filters['merchant_id'] ?? '' }}">
         <input type="hidden" name="plan_id" value="{{ $filters['plan_id'] ?? '' }}">
+        <input type="hidden" name="site_subscription_id" value="{{ $filters['site_subscription_id'] ?? '' }}">
         <input type="hidden" name="fail_only" value="{{ $filters['fail_only'] ?? '' }}">
         <input type="hidden" name="synced_only" value="{{ $filters['synced_only'] ?? '' }}">
         <input type="hidden" name="sync_status" value="{{ $filters['sync_status'] ?? '' }}">
@@ -188,6 +193,7 @@
         <input type="hidden" name="payment_status" value="{{ $filters['payment_status'] ?? '' }}">
         <input type="hidden" name="merchant_id" value="{{ $filters['merchant_id'] ?? '' }}">
         <input type="hidden" name="plan_id" value="{{ $filters['plan_id'] ?? '' }}">
+        <input type="hidden" name="site_subscription_id" value="{{ $filters['site_subscription_id'] ?? '' }}">
         <input type="hidden" name="fail_only" value="{{ $filters['fail_only'] ?? '' }}">
         <input type="hidden" name="synced_only" value="{{ $filters['synced_only'] ?? '' }}">
         <input type="hidden" name="sync_status" value="{{ $filters['sync_status'] ?? '' }}">
diff --git a/tests/Feature/AdminPlatformOrderTest.php b/tests/Feature/AdminPlatformOrderTest.php
index 9dd0605..6c54379 100644
--- a/tests/Feature/AdminPlatformOrderTest.php
+++ b/tests/Feature/AdminPlatformOrderTest.php
@@ -358,4 +358,95 @@ class AdminPlatformOrderTest extends TestCase
             ->assertDontSee('PO202603100101')
             ->assertDontSee('PO202603100102');
     }
+
+
+    public function test_platform_orders_page_can_filter_by_site_subscription_id(): void
+    {
+        $this->loginAsPlatformAdmin();
+
+        $merchant = \App\Models\Merchant::query()->firstOrFail();
+        $plan = \App\Models\Plan::query()->create([
+            'code' => 'po_subid_test',
+            'name' => '订阅ID筛选测试套餐',
+            'billing_cycle' => 'monthly',
+            'price' => 10,
+            'list_price' => 10,
+            'status' => 'active',
+            'sort' => 10,
+            'published_at' => now(),
+        ]);
+
+        $sub1 = \App\Models\SiteSubscription::query()->create([
+            'merchant_id' => $merchant->id,
+            'plan_id' => $plan->id,
+            'status' => 'activated',
+            'source' => 'manual',
+            'subscription_no' => 'SUB_FILTER_0001',
+            'plan_name' => $plan->name,
+            'billing_cycle' => 'monthly',
+            'period_months' => 1,
+            'amount' => 10,
+            'starts_at' => now()->subDay(),
+            'ends_at' => now()->addMonth(),
+            'activated_at' => now()->subDay(),
+        ]);
+
+        $sub2 = \App\Models\SiteSubscription::query()->create([
+            'merchant_id' => $merchant->id,
+            'plan_id' => $plan->id,
+            'status' => 'activated',
+            'source' => 'manual',
+            'subscription_no' => 'SUB_FILTER_0002',
+            'plan_name' => $plan->name,
+            'billing_cycle' => 'monthly',
+            'period_months' => 1,
+            'amount' => 10,
+            'starts_at' => now()->subDay(),
+            'ends_at' => now()->addMonth(),
+            'activated_at' => now()->subDay(),
+        ]);
+
+        \App\Models\PlatformOrder::query()->create([
+            'merchant_id' => $merchant->id,
+            'plan_id' => $plan->id,
+            'site_subscription_id' => $sub1->id,
+            'order_no' => 'PO_SUBID_0001',
+            'order_type' => 'renewal',
+            'status' => 'activated',
+            'payment_status' => 'paid',
+            'plan_name' => $plan->name,
+            'billing_cycle' => 'monthly',
+            'period_months' => 1,
+            'quantity' => 1,
+            'payable_amount' => 10,
+            'paid_amount' => 10,
+            'placed_at' => now()->subMinutes(2),
+            'paid_at' => now()->subMinute(),
+            'activated_at' => now(),
+        ]);
+
+        \App\Models\PlatformOrder::query()->create([
+            'merchant_id' => $merchant->id,
+            'plan_id' => $plan->id,
+            'site_subscription_id' => $sub2->id,
+            'order_no' => 'PO_SUBID_0002',
+            'order_type' => 'renewal',
+            'status' => 'activated',
+            'payment_status' => 'paid',
+            'plan_name' => $plan->name,
+            'billing_cycle' => 'monthly',
+            'period_months' => 1,
+            'quantity' => 1,
+            'payable_amount' => 10,
+            'paid_amount' => 10,
+            'placed_at' => now()->subMinutes(2),
+            'paid_at' => now()->subMinute(),
+            'activated_at' => now(),
+        ]);
+
+        $this->get('/admin/platform-orders?site_subscription_id=' . $sub1->id)
+            ->assertOk()
+            ->assertSee('PO_SUBID_0001')
+            ->assertDontSee('PO_SUBID_0002');
+    }
 }