diff --git a/tests/Feature/AdminPlatformOrderBatchMarkActivatedTest.php b/tests/Feature/AdminPlatformOrderBatchMarkActivatedTest.php
index fe81d00..290a5e8 100644
--- a/tests/Feature/AdminPlatformOrderBatchMarkActivatedTest.php
+++ b/tests/Feature/AdminPlatformOrderBatchMarkActivatedTest.php
@@ -129,6 +129,55 @@ class AdminPlatformOrderBatchMarkActivatedTest extends TestCase
         ])->assertRedirect();
     }
 
+    public function test_batch_mark_activated_requires_sync_status_unsynced_in_filtered_scope(): void
+    {
+        $this->loginAsPlatformAdmin();
+
+        $merchant = Merchant::query()->firstOrFail();
+        $plan = Plan::query()->create([
+            'code' => 'batch_mark_activated_sync_status_guard_plan',
+            'name' => '批量生效 sync_status 安全阀测试套餐',
+            'billing_cycle' => 'monthly',
+            'price' => 10,
+            'list_price' => 10,
+            'status' => 'active',
+            'sort' => 10,
+            'published_at' => now(),
+        ]);
+
+        $o1 = PlatformOrder::query()->create([
+            'merchant_id' => $merchant->id,
+            'plan_id' => $plan->id,
+            'order_no' => 'PO_BATCH_MARK_SYNC_STATUS_GUARD_0001',
+            'order_type' => 'new_purchase',
+            'status' => 'pending',
+            'payment_status' => 'paid',
+            'plan_name' => $plan->name,
+            'billing_cycle' => $plan->billing_cycle,
+            'period_months' => 1,
+            'quantity' => 1,
+            'payable_amount' => 10,
+            'paid_amount' => 10,
+            'placed_at' => now()->subMinutes(10),
+            'paid_at' => now()->subMinutes(5),
+            'meta' => [],
+        ]);
+
+        // 故意不传 sync_status=unsynced（模拟旧入口/误操作）
+        $this->post('/admin/platform-orders/batch-mark-activated', [
+            'scope' => 'filtered',
+            'payment_status' => 'paid',
+            'status' => 'pending',
+            'sync_status' => '',
+            'limit' => 50,
+        ])
+            ->assertRedirect()
+            ->assertSessionHas('warning');
+
+        $o1->refresh();
+        $this->assertSame('pending', $o1->status);
+    }
+
     public function test_guest_cannot_batch_mark_activated(): void
     {
         $this->seed();