diff --git a/public/js/admin.js b/public/js/admin.js
index 44040f5..073ad0c 100644
--- a/public/js/admin.js
+++ b/public/js/admin.js
@@ -22,6 +22,27 @@
         }
     }
 
+    // 通用：表单提交后禁用按钮，避免运营重复点击造成重复请求
+    // 用法：form 标记 data-action="disable-on-submit"。
+    (function () {
+        var forms = document.querySelectorAll('form[data-action="disable-on-submit"]');
+        if (!forms || forms.length === 0) {
+            return;
+        }
+
+        forms.forEach(function (form) {
+            form.addEventListener('submit', function () {
+                try {
+                    var btns = form.querySelectorAll('button, input[type="submit"]');
+                    btns.forEach(function (b) {
+                        b.disabled = true;
+                        // 尽量不改文案（避免影响断言/文案口径）；只做禁用
+                    });
+                } catch (e) {}
+            });
+        });
+    })();
+
     // 续费缺订阅治理：订单详情页“绑定订阅ID”输入框，小交互增强：
     // - 输入后按 Enter 直接提交
     // - 自动聚焦，减少点击
diff --git a/resources/views/admin/site_subscriptions/index.blade.php b/resources/views/admin/site_subscriptions/index.blade.php
index f6520d3..0576276 100644
--- a/resources/views/admin/site_subscriptions/index.blade.php
+++ b/resources/views/admin/site_subscriptions/index.blade.php
@@ -315,7 +315,7 @@
                                     $attachBack = $back;
                                 }
                             @endphp
-                            <form method="post" action="/admin/platform-orders/{{ $attachOrderId }}/attach-subscription" class="inline-form" onsubmit="return confirm('确认将该订阅绑定到目标订单？');">
+                            <form method="post" action="/admin/platform-orders/{{ $attachOrderId }}/attach-subscription" class="inline-form" data-action="disable-on-submit" onsubmit="return confirm('确认将该订阅绑定到目标订单？');">
                                 @csrf
                                 <input type="hidden" name="site_subscription_id" value="{{ $subscription->id }}">
                                 @if($attachBack !== '')
diff --git a/tests/Feature/AdminSiteSubscriptionIndexAttachOrderIdShouldMarkBindFormDisableOnSubmitTest.php b/tests/Feature/AdminSiteSubscriptionIndexAttachOrderIdShouldMarkBindFormDisableOnSubmitTest.php
new file mode 100644
index 0000000..dd29720
--- /dev/null
+++ b/tests/Feature/AdminSiteSubscriptionIndexAttachOrderIdShouldMarkBindFormDisableOnSubmitTest.php
@@ -0,0 +1,67 @@
+<?php
+
+namespace Tests\Feature;
+
+use App\Models\Merchant;
+use App\Models\Plan;
+use App\Models\SiteSubscription;
+use Illuminate\Foundation\Testing\RefreshDatabase;
+use Tests\TestCase;
+
+class AdminSiteSubscriptionIndexAttachOrderIdShouldMarkBindFormDisableOnSubmitTest 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_index_should_mark_bind_form_disable_on_submit(): void
+    {
+        $this->loginAsPlatformAdmin();
+
+        $merchant = Merchant::query()->firstOrFail();
+
+        $plan = Plan::query()->create([
+            'code' => 'sub_index_disable_on_submit_plan',
+            'name' => '订阅列表绑定按钮防重复提交测试套餐',
+            'billing_cycle' => 'monthly',
+            'price' => 10,
+            'list_price' => 10,
+            'status' => 'active',
+            'sort' => 10,
+            'published_at' => now(),
+        ]);
+
+        SiteSubscription::query()->create([
+            'merchant_id' => $merchant->id,
+            'plan_id' => $plan->id,
+            'status' => 'active',
+            'source' => 'manual',
+            'subscription_no' => 'SS_DISABLE_ON_SUBMIT_0001',
+            'plan_name' => $plan->name,
+            'billing_cycle' => $plan->billing_cycle,
+            'period_months' => 1,
+            'amount' => 10,
+            'starts_at' => now()->subDays(1),
+            'ends_at' => now()->addDays(10),
+            'snapshot' => [],
+            'meta' => [],
+        ]);
+
+        $orderId = 12345;
+
+        $res = $this->get('/admin/site-subscriptions?attach_order_id=' . $orderId . '&attach_back=%2Fadmin%2Fplatform-orders%2F1');
+        $res->assertOk();
+
+        $html = (string) $res->getContent();
+
+        $this->assertStringContainsString('data-action="disable-on-submit"', $html);
+    }
+}