diff --git a/resources/views/admin/platform_orders/form.blade.php b/resources/views/admin/platform_orders/form.blade.php
index e3406b0..ec1c7b6 100644
--- a/resources/views/admin/platform_orders/form.blade.php
+++ b/resources/views/admin/platform_orders/form.blade.php
@@ -104,11 +104,26 @@
 
     <label>
         <span>订单类型</span>
+        @php
+            $canRenew = ((int) ($defaults['site_subscription_id'] ?? 0) > 0) && (($siteSubscription ?? null) && ($siteSubscription->id ?? 0));
+            $selectedOrderType = (string) old('order_type', $defaults['order_type'] ?? 'new_purchase');
+            // 治理口径：续费必须绑定订阅。若当前页面未绑定订阅，则不允许选中 renewal（避免提交后才报错）。
+            if (! $canRenew && $selectedOrderType === 'renewal') {
+                $selectedOrderType = 'new_purchase';
+            }
+        @endphp
         <select name="order_type" required>
             @foreach(($orderTypeLabels ?? []) as $value => $label)
-                <option value="{{ $value }}" @selected(old('order_type', $defaults['order_type'] ?? 'new_purchase') === $value)>{{ $label }}</option>
+                @if($value === 'renewal' && ! $canRenew)
+                    <option value="{{ $value }}" disabled>{{ $label }}（需从订阅进入）</option>
+                @else
+                    <option value="{{ $value }}" @selected($selectedOrderType === $value)>{{ $label }}</option>
+                @endif
             @endforeach
         </select>
+        @if(! $canRenew)
+            <small class="muted">提示：续费单必须绑定订阅。请从「订阅管理」列表/详情进入“续费下单”，系统会自动带入订阅ID。</small>
+        @endif
     </label>
 
     <label>
diff --git a/tests/Feature/AdminPlatformOrderCreateOrderTypeRenewalOptionDisabledWhenNoSubscriptionTest.php b/tests/Feature/AdminPlatformOrderCreateOrderTypeRenewalOptionDisabledWhenNoSubscriptionTest.php
new file mode 100644
index 0000000..a2f29e9
--- /dev/null
+++ b/tests/Feature/AdminPlatformOrderCreateOrderTypeRenewalOptionDisabledWhenNoSubscriptionTest.php
@@ -0,0 +1,32 @@
+<?php
+
+namespace Tests\Feature;
+
+use Illuminate\Foundation\Testing\RefreshDatabase;
+use Tests\TestCase;
+
+class AdminPlatformOrderCreateOrderTypeRenewalOptionDisabledWhenNoSubscriptionTest 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_create_form_should_disable_renewal_order_type_when_site_subscription_id_missing(): void
+    {
+        $this->loginAsPlatformAdmin();
+
+        $res = $this->get('/admin/platform-orders/create');
+        $res->assertOk();
+
+        $res->assertSee('value="renewal" disabled', false);
+        $res->assertSee('续费单必须绑定订阅', false);
+    }
+}