diff --git a/app/Http/Controllers/Admin/PlatformBatchController.php b/app/Http/Controllers/Admin/PlatformBatchController.php
index a3421b5..8e8d261 100644
--- a/app/Http/Controllers/Admin/PlatformBatchController.php
+++ b/app/Http/Controllers/Admin/PlatformBatchController.php
@@ -25,6 +25,9 @@ class PlatformBatchController extends Controller
         $incomingBack = (string) $request->query('back', '');
         $safeBackForLinks = BackUrl::sanitizeForLinks($incomingBack);
 
+        // 抽样复核：换一单（用 id 游标避免随机导致测试不稳定）
+        $spotAfterId = (int) $request->query('spot_after_id', 0);
+
         if ($type === '' || $runId === '') {
             return view('admin.platform_batches.show', [
                 'type' => $type,
@@ -190,6 +193,10 @@ class PlatformBatchController extends Controller
             $sampleQuery->whereRaw("JSON_UNQUOTE(JSON_EXTRACT(meta, '{$keyPrefix}.run_id')) = ?", [$runId]);
         }
 
+        if ($spotAfterId > 0) {
+            $sampleQuery->where('id', '<', $spotAfterId);
+        }
+
         if ($type === 'bas') {
             $sampleQuery->whereRaw("JSON_EXTRACT(meta, '$.subscription_activation.subscription_id') IS NOT NULL")
                 ->whereRaw("JSON_EXTRACT(meta, '$.subscription_activation_error.message') IS NULL");
diff --git a/resources/views/admin/platform_batches/show.blade.php b/resources/views/admin/platform_batches/show.blade.php
index f222d8e..8c8ba1d 100644
--- a/resources/views/admin/platform_batches/show.blade.php
+++ b/resources/views/admin/platform_batches/show.blade.php
@@ -129,6 +129,17 @@
                     <button type="button" class="btn btn-secondary btn-xs" data-action="copy-text" data-role="copy-spot-check-order-id" data-copy-label="订单ID" data-copy-text="{{ $spotCheck['order_id'] }}">复制订单ID</button>
                 @endif
                 <span class="muted muted-xs">（从本批次成功集合抽一单，用于 spot-check）</span>
+                @if(($spotCheck['order_id'] ?? 0) > 0)
+                    @php
+                        $spotPickNextUrl = '/admin/platform-batches/show?' . \Illuminate\Support\Arr::query([
+                            'type' => $type,
+                            'run_id' => $runId,
+                            'spot_after_id' => (int) ($spotCheck['order_id'] ?? 0),
+                        ]);
+                        $spotPickNextUrl = \App\Support\BackUrl::withBack($spotPickNextUrl, $safeBackForLinks);
+                    @endphp
+                    <a class="link muted-xs" data-role="batch-spot-check-next" href="{{ $spotPickNextUrl }}">换一单</a>
+                @endif
             </div>
         @else
             <div class="muted">暂无可抽样订单（可能暂无成功单，或 last_result 尚未补齐）。</div>
diff --git a/tests/Feature/AdminPlatformBatchShowPageSpotCheckNextLinkShouldRenderTest.php b/tests/Feature/AdminPlatformBatchShowPageSpotCheckNextLinkShouldRenderTest.php
new file mode 100644
index 0000000..961106b
--- /dev/null
+++ b/tests/Feature/AdminPlatformBatchShowPageSpotCheckNextLinkShouldRenderTest.php
@@ -0,0 +1,126 @@
+<?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 AdminPlatformBatchShowPageSpotCheckNextLinkShouldRenderTest 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_batch_show_page_should_render_spot_check_next_link_with_spot_after_id(): void
+    {
+        $this->loginAsPlatformAdmin();
+
+        $merchant = Merchant::query()->firstOrFail();
+        $plan = Plan::query()->create([
+            'code' => 'plan_batch_spot_next_0001',
+            'name' => '批次页抽样复核换一单入口渲染测试套餐',
+            'billing_cycle' => 'monthly',
+            'price' => 10,
+            'list_price' => 10,
+            'status' => 'active',
+            'sort' => 10,
+            'published_at' => now(),
+        ]);
+
+        $runId = 'BMPA_SPOT_NEXT_0001';
+
+        // 两单都属于同一批次且为成功（run_id 存在且无 error）
+        $orderA = PlatformOrder::query()->create([
+            'merchant_id' => $merchant->id,
+            'plan_id' => $plan->id,
+            'order_no' => 'PO_BMPA_SPOT_NEXT_A',
+            '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()->subMinutes(11),
+            'paid_at' => now()->subMinutes(10),
+            'activated_at' => now()->subMinutes(9),
+            'meta' => [
+                'batch_mark_paid_and_activate' => [
+                    'run_id' => $runId,
+                    'last_result' => [
+                        'run_id' => $runId,
+                        'success' => 2,
+                        'failed' => 0,
+                        'matched' => 2,
+                        'processed' => 2,
+                        'top_reasons' => [],
+                        'at' => now()->toDateTimeString(),
+                    ],
+                ],
+            ],
+        ]);
+
+        $orderB = PlatformOrder::query()->create([
+            'merchant_id' => $merchant->id,
+            'plan_id' => $plan->id,
+            'order_no' => 'PO_BMPA_SPOT_NEXT_B',
+            '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()->subMinutes(8),
+            'paid_at' => now()->subMinutes(7),
+            'activated_at' => now()->subMinutes(6),
+            'meta' => [
+                'batch_mark_paid_and_activate' => [
+                    'run_id' => $runId,
+                    'last_result' => [
+                        'run_id' => $runId,
+                        'success' => 2,
+                        'failed' => 0,
+                        'matched' => 2,
+                        'processed' => 2,
+                        'top_reasons' => [],
+                        'at' => now()->toDateTimeString(),
+                    ],
+                ],
+            ],
+        ]);
+
+        // 默认 spot-check 会选最新一单（orderB）；"换一单" 应带 spot_after_id=orderB->id
+        $html = $this->get('/admin/platform-batches/show?type=bmpa&run_id=' . $runId)
+            ->assertOk()
+            ->getContent();
+
+        $this->assertStringContainsString('data-role="batch-spot-check-next"', $html);
+        $this->assertStringContainsString('spot_after_id=' . $orderB->id, $html);
+        $this->assertStringContainsString('type=bmpa', $html);
+        $this->assertStringContainsString('run_id=' . $runId, $html);
+
+        // 带 spot_after_id 后，应能切换到更早的一单（orderA）
+        $html2 = $this->get('/admin/platform-batches/show?type=bmpa&run_id=' . $runId . '&spot_after_id=' . $orderB->id)
+            ->assertOk()
+            ->getContent();
+
+        $this->assertStringContainsString('/admin/platform-orders/' . $orderA->id, $html2);
+        $this->assertStringNotContainsString('/admin/platform-orders/' . $orderB->id . '#payment-receipts', $html2);
+    }
+}