diff --git a/resources/views/admin/platform_orders/show.blade.php b/resources/views/admin/platform_orders/show.blade.php
index 2ca5380..41bb86d 100644
--- a/resources/views/admin/platform_orders/show.blade.php
+++ b/resources/views/admin/platform_orders/show.blade.php
@@ -429,6 +429,37 @@
         </table>
     @else
         <p class="muted">该订单尚未关联订阅（site_subscription_id 为空）。</p>
+
+        @php
+            $isRenewalMissingSubscription = ((string) ($order->order_type ?? '') === 'renewal')
+                && ((int) ($order->site_subscription_id ?? 0) <= 0);
+
+            $missingSubHelpUrlForRelationBlock = '';
+            if ($isRenewalMissingSubscription) {
+                $missingSubHelpUrlForRelationBlock = \App\Support\BackUrl::withBack('/admin/site-subscriptions?' . \Illuminate\Support\Arr::query([
+                    'merchant_id' => (int) ($order->merchant_id ?? 0) ?: null,
+                    'plan_id' => (int) ($order->plan_id ?? 0) ?: null,
+                    'page' => null,
+                ]), $orderShowSelf);
+            }
+        @endphp
+
+        @if($isRenewalMissingSubscription)
+            <div class="card governance-block mt-10">
+                <div class="muted text-danger governance-block-title"><strong>订阅关联治理提示</strong></div>
+                <div class="muted governance-block-body">
+                    <div>
+                        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">建议先找到正确订阅并补齐关联，再进行 BMPA/同步/标记生效等动作。</span>
+                        @if($missingSubHelpUrlForRelationBlock !== '')
+                            <span class="muted">｜</span>
+                            <a class="btn btn-secondary btn-sm" href="{!! $missingSubHelpUrlForRelationBlock !!}">去订阅管理查找订阅</a>
+                        @endif
+                    </div>
+                </div>
+            </div>
+        @endif
     @endif
 </div>
 
diff --git a/tests/Feature/AdminPlatformOrderShowRelationSubscriptionBlockShouldIncludeFindSubscriptionLinkWhenRenewalMissingSubscriptionTest.php b/tests/Feature/AdminPlatformOrderShowRelationSubscriptionBlockShouldIncludeFindSubscriptionLinkWhenRenewalMissingSubscriptionTest.php
new file mode 100644
index 0000000..b5e89c1
--- /dev/null
+++ b/tests/Feature/AdminPlatformOrderShowRelationSubscriptionBlockShouldIncludeFindSubscriptionLinkWhenRenewalMissingSubscriptionTest.php
@@ -0,0 +1,74 @@
+<?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 AdminPlatformOrderShowRelationSubscriptionBlockShouldIncludeFindSubscriptionLinkWhenRenewalMissingSubscriptionTest 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_render_relation_governance_block_when_renewal_missing_subscription(): void
+    {
+        $this->loginAsPlatformAdmin();
+
+        $merchant = Merchant::query()->firstOrFail();
+        $plan = Plan::query()->create([
+            'code' => 'po_show_relation_block_renewal_no_sub_plan',
+            'name' => '订单详情 关联订阅治理提示（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_RELATION_BLOCK_RENEW_NO_SUB_0001',
+            'order_type' => 'renewal',
+            'status' => 'pending',
+            'payment_status' => 'unpaid',
+            'plan_name' => $plan->name,
+            'billing_cycle' => $plan->billing_cycle,
+            'period_months' => 1,
+            'quantity' => 1,
+            'payable_amount' => 30,
+            'paid_amount' => 0,
+            'placed_at' => now(),
+            'meta' => [],
+        ]);
+
+        $res = $this->get('/admin/platform-orders/' . $order->id);
+        $res->assertOk();
+
+        $html = (string) $res->getContent();
+
+        $this->assertStringContainsString('订阅关联治理提示', $html);
+        $this->assertStringContainsString('续费', $html);
+        $this->assertStringContainsString('未绑定订阅', $html);
+        $this->assertStringContainsString('去订阅管理查找订阅', $html);
+
+        // 链接应包含 merchant_id/plan_id，并携带 back 回到当前订单详情
+        $this->assertStringContainsString('/admin/site-subscriptions?', $html);
+        $this->assertStringContainsString('merchant_id=' . $merchant->id, $html);
+        $this->assertStringContainsString('plan_id=' . $plan->id, $html);
+        $this->assertStringContainsString('back=' . urlencode('/admin/platform-orders/' . $order->id), $html);
+    }
+}