diff --git a/app/Http/Controllers/Admin/PlatformOrderController.php b/app/Http/Controllers/Admin/PlatformOrderController.php
index 305b84b..186dd15 100644
--- a/app/Http/Controllers/Admin/PlatformOrderController.php
+++ b/app/Http/Controllers/Admin/PlatformOrderController.php
@@ -1605,6 +1605,14 @@ class PlatformOrderController extends Controller
         // 注意：当前阶段仍由 Job 内逐条写 meta 与错误原因；后续可再升级为分片 Job + 结果聚合。
         $orderIds = $orders->pluck('id')->map(fn ($id) => (int) $id)->values()->all();
 
+        // 幂等/防抖（最小实现）：避免运营短时间内重复点击导致重复投递同一批次。
+        // 说明：这里做“短 TTL 的一次性锁”，不引入新表；后续可演进为批次表 + 幂等 key。
+        // key 口径：scope + filters + ids + limit（同一集合的重复点击会被拦截）。
+        $lockKey = 'admin:bas:dispatch:' . md5($scope . '|' . $filterSummary . '|' . implode(',', $orderIds) . '|' . $limit);
+        if (! Cache::add($lockKey, '1', 60)) {
+            return redirect()->back()->with('warning', '检测到刚刚已提交过同一批次的 BAS 任务（1 分钟内）。为避免重复投递，本次未再次提交。');
+        }
+
         \App\Jobs\BatchActivateSubscriptionsJob::dispatch(
             $orderIds,
             (int) $admin->id,
diff --git a/tests/Feature/AdminPlatformOrderBatchActivateSubscriptionsShouldNotDispatchDuplicateJobWithin1MinuteTest.php b/tests/Feature/AdminPlatformOrderBatchActivateSubscriptionsShouldNotDispatchDuplicateJobWithin1MinuteTest.php
new file mode 100644
index 0000000..b8cede5
--- /dev/null
+++ b/tests/Feature/AdminPlatformOrderBatchActivateSubscriptionsShouldNotDispatchDuplicateJobWithin1MinuteTest.php
@@ -0,0 +1,84 @@
+<?php
+
+namespace Tests\Feature;
+
+use App\Jobs\BatchActivateSubscriptionsJob;
+use App\Models\Merchant;
+use App\Models\Plan;
+use App\Models\PlatformOrder;
+use Illuminate\Foundation\Testing\RefreshDatabase;
+use Illuminate\Support\Facades\Cache;
+use Illuminate\Support\Facades\Queue;
+use Tests\TestCase;
+
+class AdminPlatformOrderBatchActivateSubscriptionsShouldNotDispatchDuplicateJobWithin1MinuteTest 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_should_block_duplicate_dispatch_within_1_minute(): void
+    {
+        $this->loginAsPlatformAdmin();
+
+        Queue::fake();
+        Cache::flush();
+
+        $merchant = Merchant::query()->firstOrFail();
+        $plan = Plan::query()->create([
+            'code' => 'batch_activate_subscriptions_dedupe_plan',
+            'name' => '批量同步订阅去重投递测试套餐',
+            'billing_cycle' => 'monthly',
+            'price' => 10,
+            'list_price' => 10,
+            'status' => 'active',
+            'sort' => 10,
+            'published_at' => now(),
+        ]);
+
+        PlatformOrder::query()->create([
+            'merchant_id' => $merchant->id,
+            'plan_id' => $plan->id,
+            'order_no' => 'PO_BAS_DEDUPE_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()->subMinutes(10),
+            'paid_at' => now()->subMinutes(9),
+            'activated_at' => now()->subMinutes(8),
+        ]);
+
+        // 第一次：应投递
+        $this->post('/admin/platform-orders/batch-activate-subscriptions', [
+            'scope' => 'filtered',
+            'syncable_only' => '1',
+            'limit' => 50,
+        ])->assertRedirect();
+
+        // 第二次（同一集合，1 分钟内）：应被阻断，不再投递
+        $res2 = $this->post('/admin/platform-orders/batch-activate-subscriptions', [
+            'scope' => 'filtered',
+            'syncable_only' => '1',
+            'limit' => 50,
+        ]);
+
+        $res2->assertRedirect();
+        $res2->assertSessionHas('warning');
+
+        Queue::assertPushed(BatchActivateSubscriptionsJob::class, 1);
+    }
+}