diff --git a/tests/Feature/AdminPlatformOrderIndexRowActivateSubscriptionButtonShouldDisableWhenRenewalMissingSubscriptionTest.php b/tests/Feature/AdminPlatformOrderIndexRowActivateSubscriptionButtonShouldDisableWhenRenewalMissingSubscriptionTest.php
new file mode 100644
index 0000000..92a38ef
--- /dev/null
+++ b/tests/Feature/AdminPlatformOrderIndexRowActivateSubscriptionButtonShouldDisableWhenRenewalMissingSubscriptionTest.php
@@ -0,0 +1,75 @@
+<?php
+
+namespace Tests\Feature;
+
+use App\Models\Merchant;
+use App\Models\Plan;
+use App\Models\PlatformOrder;
+use Illuminate\Foundation\Testing\RefreshDatabase;
+use Tests\TestCase;
+
+class AdminPlatformOrderIndexRowActivateSubscriptionButtonShouldDisableWhenRenewalMissingSubscriptionTest extends TestCase
+{
+    use RefreshDatabase;
+
+    protected function loginAsPlatformAdmin(): void
+    {
+        $this->seed();
+
+        $this->post('/admin/login', [
+            'email' => 'platform.admin@demo.local',
+            'password' => 'Platform@123456',
+        ])->assertRedirect('/admin');
+    }
+
+    public function test_row_activate_subscription_button_should_be_disabled_when_renewal_missing_subscription(): void
+    {
+        $this->loginAsPlatformAdmin();
+
+        $merchant = Merchant::query()->firstOrFail();
+        $plan = Plan::query()->create([
+            'code' => 'po_index_row_sync_disable_renewal_missing_sub_plan',
+            'name' => '平台订单列表行级同步订阅禁用（续费缺订阅）测试套餐',
+            'billing_cycle' => 'monthly',
+            'price' => 30,
+            'list_price' => 30,
+            'status' => 'active',
+            'sort' => 10,
+            'published_at' => now(),
+        ]);
+
+        // 构造：续费单已支付已生效，但缺订阅（脏数据）
+        $order = PlatformOrder::query()->create([
+            'merchant_id' => $merchant->id,
+            'plan_id' => $plan->id,
+            'order_no' => 'PO_INDEX_ROW_SYNC_DISABLE_RENEW_MISS_SUB_0001',
+            'order_type' => 'renewal',
+            'site_subscription_id' => null,
+            'status' => 'activated',
+            'payment_status' => 'paid',
+            'plan_name' => $plan->name,
+            'billing_cycle' => $plan->billing_cycle,
+            'period_months' => 1,
+            'quantity' => 1,
+            'payable_amount' => 30,
+            'paid_amount' => 30,
+            'placed_at' => now(),
+            'paid_at' => now(),
+            'activated_at' => now(),
+            'meta' => [],
+        ]);
+
+        $res = $this->get('/admin/platform-orders');
+        $res->assertOk();
+
+        $html = (string) $res->getContent();
+        $this->assertStringContainsString($order->order_no, $html);
+
+        // 断言：该订单所在行的“同步订阅”按钮应被禁用（避免运营在列表页误触）
+        $pattern = '#/admin/platform-orders/' . $order->id . '/activate-subscription.*?<button[^>]*disabled#s';
+        $this->assertMatchesRegularExpression($pattern, $html);
+
+        // 并且应提供最短治理入口（续费缺订阅：去关联订阅）
+        $this->assertStringContainsString('#relation-subscription', $html);
+    }
+}