diff --git a/app/Jobs/BatchActivateSubscriptionsJob.php b/app/Jobs/BatchActivateSubscriptionsJob.php
index 0ed4f97..90dad8d 100644
--- a/app/Jobs/BatchActivateSubscriptionsJob.php
+++ b/app/Jobs/BatchActivateSubscriptionsJob.php
@@ -52,6 +52,9 @@ class BatchActivateSubscriptionsJob implements ShouldQueue
 
     public function handle(SubscriptionActivationService $service): void
     {
+        // 批次号：用于把一次队列批量执行关联起来，便于后续追溯/筛选/可观测。
+        $runId = 'BAS' . now()->format('YmdHis') . str_pad((string) random_int(1, 9999), 4, '0', STR_PAD_LEFT);
+
         foreach ($this->orderIds as $orderId) {
             /** @var PlatformOrder|null $order */
             $order = PlatformOrder::query()->find($orderId);
@@ -81,7 +84,8 @@ class BatchActivateSubscriptionsJob implements ShouldQueue
                     'admin_id' => $this->adminId,
                     'subscription_id' => $subscription->id,
                     'filters' => $this->filterSummary,
-                    'note' => '批量同步订阅（queue, limit=' . $this->limit . ', matched=' . $this->matchedTotal . ', processed=' . $this->processed . ')',
+                    'run_id' => $runId,
+                    'note' => '批量同步订阅（queue, run_id=' . $runId . ', limit=' . $this->limit . ', matched=' . $this->matchedTotal . ', processed=' . $this->processed . ')',
                 ];
                 data_set($meta, 'audit', $audit);
 
@@ -91,6 +95,7 @@ class BatchActivateSubscriptionsJob implements ShouldQueue
                     'admin_id' => $this->adminId,
                     'scope' => $this->scope,
                     'mode' => 'queue',
+                    'run_id' => $runId,
                 ]);
 
                 $order->meta = $meta;
diff --git a/tests/Feature/BatchActivateSubscriptionsJobShouldWriteRunIdTest.php b/tests/Feature/BatchActivateSubscriptionsJobShouldWriteRunIdTest.php
new file mode 100644
index 0000000..c616416
--- /dev/null
+++ b/tests/Feature/BatchActivateSubscriptionsJobShouldWriteRunIdTest.php
@@ -0,0 +1,76 @@
+<?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 Tests\TestCase;
+
+class BatchActivateSubscriptionsJobShouldWriteRunIdTest 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_job_should_write_run_id_into_batch_activation_meta_and_audit(): void
+    {
+        $this->loginAsPlatformAdmin();
+
+        $merchant = Merchant::query()->firstOrFail();
+        $plan = Plan::query()->create([
+            'code' => 'job_batch_activate_run_id_plan',
+            'name' => 'Job 批量同步 run_id 测试套餐',
+            'billing_cycle' => 'monthly',
+            'price' => 10,
+            'list_price' => 10,
+            'status' => 'active',
+            'sort' => 10,
+            'published_at' => now(),
+        ]);
+
+        $order = PlatformOrder::query()->create([
+            'merchant_id' => $merchant->id,
+            'plan_id' => $plan->id,
+            'order_no' => 'PO_JOB_BATCH_RUN_ID_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),
+            'meta' => [],
+        ]);
+
+        // 同步执行 job 的 handle（不依赖 queue worker），用于锁定写入口径
+        $job = new BatchActivateSubscriptionsJob([
+            $order->id,
+        ], 1, 'filtered', 'syncable_only=1', 50, 1, 1);
+
+        $job->handle(app(\App\Support\SubscriptionActivationService::class));
+
+        $order->refresh();
+
+        $this->assertNotEmpty((string) data_get($order->meta, 'batch_activation.run_id'));
+        $this->assertSame((string) data_get($order->meta, 'batch_activation.run_id'), (string) data_get($order->meta, 'audit.0.run_id'));
+
+        $runId = (string) data_get($order->meta, 'batch_activation.run_id');
+        $this->assertStringStartsWith('BAS', $runId);
+    }
+}