diff --git a/resources/views/admin/platform_orders/show.blade.php b/resources/views/admin/platform_orders/show.blade.php
index a4ae746..2ca5380 100644
--- a/resources/views/admin/platform_orders/show.blade.php
+++ b/resources/views/admin/platform_orders/show.blade.php
@@ -342,11 +342,31 @@
 
         @php
             $canMarkActivatedOnly = ($order->payment_status === 'paid') && ($order->status !== 'activated');
+            // 安全阀：续费单未绑定订阅时，不允许“仅标记为已生效”（后端 markActivated 也会阻断）
+            $markActivatedBlockedByMissingSubscriptionOnRenewal = ((string) ($order->order_type ?? '') === 'renewal')
+                && ((int) ($order->site_subscription_id ?? 0) <= 0);
         @endphp
         <form method="post" action="/admin/platform-orders/{{ $order->id }}/mark-activated" onsubmit="return confirm('确认将该订单标记为已生效？（不修改支付状态，不自动同步订阅）');">
             @csrf
-            <button class="btn btn-secondary btn-sm" type="submit" @disabled(! $canMarkActivatedOnly)>仅标记为已生效</button>
+            <button class="btn btn-secondary btn-sm" type="submit" @disabled(! $canMarkActivatedOnly || $markActivatedBlockedByMissingSubscriptionOnRenewal)>仅标记为已生效</button>
         </form>
+
+        @if($markActivatedBlockedByMissingSubscriptionOnRenewal)
+            <div class="card governance-block">
+                <div class="muted text-danger governance-block-title"><strong>生效治理提示</strong>（当前不可直接标记为已生效）</div>
+                <div class="muted governance-block-body">
+                    <div>
+                        原因：当前订单类型为「续费」，但未绑定订阅（site_subscription_id 为空）。
+                        <span class="muted">｜</span>
+                        <span class="muted">请先补齐订阅关联后再处理。</span>
+                        @if($missingSubscriptionHelpUrl !== '')
+                            <span class="muted">｜</span>
+                            <a class="btn btn-secondary btn-sm" href="{!! $missingSubscriptionHelpUrl !!}">去订阅管理查找订阅</a>
+                        @endif
+                    </div>
+                </div>
+            </div>
+        @endif
     </div>
 
     @if(! $canActivate)
diff --git a/tests/Feature/AdminPlatformOrderShowMarkActivatedButtonDisabledWhenRenewalMissingSubscriptionTest.php b/tests/Feature/AdminPlatformOrderShowMarkActivatedButtonDisabledWhenRenewalMissingSubscriptionTest.php
new file mode 100644
index 0000000..9243534
--- /dev/null
+++ b/tests/Feature/AdminPlatformOrderShowMarkActivatedButtonDisabledWhenRenewalMissingSubscriptionTest.php
@@ -0,0 +1,71 @@
+<?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 AdminPlatformOrderShowMarkActivatedButtonDisabledWhenRenewalMissingSubscriptionTest 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_show_should_disable_mark_activated_button_when_renewal_order_missing_subscription(): void
+    {
+        $this->loginAsPlatformAdmin();
+
+        $merchant = Merchant::query()->firstOrFail();
+        $plan = Plan::query()->create([
+            'code' => 'po_show_mark_activated_disable_renewal_no_sub_plan',
+            'name' => '订单详情 生效按钮禁用（续费无订阅）测试套餐',
+            'billing_cycle' => 'monthly',
+            'price' => 30,
+            'list_price' => 30,
+            'status' => 'active',
+            'sort' => 10,
+            'published_at' => now(),
+        ]);
+
+        $order = PlatformOrder::query()->create([
+            'merchant_id' => $merchant->id,
+            'plan_id' => $plan->id,
+            'order_no' => 'PO_SHOW_MARK_ACTIVATED_DISABLE_RENEW_NO_SUB_0001',
+            'order_type' => 'renewal',
+            'status' => 'pending',
+            '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(),
+            'meta' => [],
+        ]);
+
+        $res = $this->get('/admin/platform-orders/' . $order->id);
+        $res->assertOk();
+
+        // 按钮应被禁用（disabled）
+        $res->assertSee('仅标记为已生效', false);
+        $res->assertSee('disabled', false);
+
+        // 治理提示应出现，并包含引导入口
+        $res->assertSee('生效治理提示', false);
+        $res->assertSee('续费', false);
+        $res->assertSee('未绑定订阅', false);
+        $res->assertSee('去订阅管理查找订阅', false);
+    }
+}