diff --git a/resources/views/admin/platform_orders/show.blade.php b/resources/views/admin/platform_orders/show.blade.php
index ecf5eb8..d50d8b2 100644
--- a/resources/views/admin/platform_orders/show.blade.php
+++ b/resources/views/admin/platform_orders/show.blade.php
@@ -193,7 +193,7 @@
             @if($canMarkRefunded)
                 <div class="muted">
                     当前支付状态不是「已退款」，但退款总额已达到/超过已付金额。
-                    <form method="post" action="/admin/platform-orders/{{ $order->id }}/mark-refunded" class="inline-form" onsubmit="return confirm('确认将该订单支付状态标记为已退款？该操作不会自动写入退款回执，仅修正状态');">
+                    <form method="post" action="/admin/platform-orders/{{ $order->id }}/mark-refunded" class="inline-form" data-action="disable-on-submit" onsubmit="return confirm('确认将该订单支付状态标记为已退款？该操作不会自动写入退款回执，仅修正状态');">
                         @csrf
                         <button class="btn btn-danger btn-sm" type="submit">标记为已退款</button>
                     </form>
@@ -201,11 +201,11 @@
             @else
                 <div class="muted">
                     当前支付状态为「已退款」，但退款总额不足。
-                    <form method="post" action="/admin/platform-orders/{{ $order->id }}/mark-partially-refunded" class="inline-form" onsubmit="return confirm('确认将该订单支付状态标记为部分退款？该操作不会自动写入退款回执，仅修正状态');">
+                    <form method="post" action="/admin/platform-orders/{{ $order->id }}/mark-partially-refunded" class="inline-form" data-action="disable-on-submit" onsubmit="return confirm('确认将该订单支付状态标记为部分退款？该操作不会自动写入退款回执，仅修正状态');">
                         @csrf
                         <button class="btn btn-danger btn-sm" type="submit">标记为部分退款</button>
                     </form>
-                    <form method="post" action="/admin/platform-orders/{{ $order->id }}/mark-paid-status" class="inline-form" onsubmit="return confirm('确认将该订单支付状态标记为已支付？该操作不会自动写入回执/退款回执，仅修正状态');">
+                    <form method="post" action="/admin/platform-orders/{{ $order->id }}/mark-paid-status" class="inline-form" data-action="disable-on-submit" onsubmit="return confirm('确认将该订单支付状态标记为已支付？该操作不会自动写入回执/退款回执，仅修正状态');">
                         @csrf
                         <button class="btn btn-danger btn-sm" type="submit">标记为已支付</button>
                     </form>
diff --git a/tests/Feature/AdminPlatformOrderShowRefundGovernanceFormsShouldDisableOnSubmitTest.php b/tests/Feature/AdminPlatformOrderShowRefundGovernanceFormsShouldDisableOnSubmitTest.php
new file mode 100644
index 0000000..69e0208
--- /dev/null
+++ b/tests/Feature/AdminPlatformOrderShowRefundGovernanceFormsShouldDisableOnSubmitTest.php
@@ -0,0 +1,76 @@
+<?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 AdminPlatformOrderShowRefundGovernanceFormsShouldDisableOnSubmitTest 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_refund_governance_forms_should_disable_on_submit(): void
+    {
+        $this->loginAsPlatformAdmin();
+
+        $merchant = Merchant::query()->firstOrFail();
+        $plan = Plan::query()->create([
+            'code' => 'refund_gov_disable_submit_01',
+            'name' => '退款治理禁用提交测试',
+            'billing_cycle' => 'monthly',
+            'price' => 10,
+            'list_price' => 10,
+            'status' => 'active',
+            'sort' => 10,
+            'published_at' => now(),
+        ]);
+
+        // 让 canMarkRefunded = true：非 refunded 且 refund_total >= paid + tol
+        $order = PlatformOrder::query()->create([
+            'merchant_id' => $merchant->id,
+            'plan_id' => $plan->id,
+            'order_no' => 'PO_REFUND_GOV_DISABLE_SUBMIT_0001',
+            'order_type' => 'new_purchase',
+            'status' => 'activated',
+            'payment_status' => 'paid',
+            'plan_name' => $plan->name,
+            'billing_cycle' => $plan->billing_cycle,
+            'period_months' => 1,
+            'quantity' => 1,
+            'payable_amount' => 10,
+            'paid_amount' => 10,
+            'placed_at' => now(),
+            'paid_at' => now(),
+            'activated_at' => now(),
+            'meta' => [
+                'refund_summary' => [
+                    'count' => 1,
+                    'total_amount' => 10.01,
+                ],
+            ],
+        ]);
+
+        $html = $this->get('/admin/platform-orders/' . $order->id)
+            ->assertOk()
+            ->getContent();
+
+        $this->assertIsString($html);
+
+        // 退款治理区块内的关键表单必须带 data-action="disable-on-submit"，避免运营重复点击造成重复请求。
+        $this->assertStringContainsString('/admin/platform-orders/' . $order->id . '/mark-refunded', $html);
+        $this->assertStringContainsString('data-action="disable-on-submit"', $html);
+    }
+}