diff --git a/app/Http/Controllers/Admin/PlatformOrderController.php b/app/Http/Controllers/Admin/PlatformOrderController.php
index 30d9a88..b48d023 100644
--- a/app/Http/Controllers/Admin/PlatformOrderController.php
+++ b/app/Http/Controllers/Admin/PlatformOrderController.php
@@ -958,6 +958,27 @@ class PlatformOrderController extends Controller
             'last_channel' => (string) (data_get($latest, 'channel') ?? ''),
         ]);
 
+        // 审计：追加支付回执（用于对账留痕，不自动改状态）
+        $audit = (array) (data_get($meta, 'audit', []) ?? []);
+        $audit[] = [
+            'action' => 'add_payment_receipt',
+            'scope' => 'single',
+            'at' => $now->toDateTimeString(),
+            'admin_id' => $admin->id,
+            'note' => '追加支付回执（对账留痕，不自动改状态）',
+            'snapshot' => [
+                'type' => (string) $data['type'],
+                'channel' => (string) ($data['channel'] ?? ''),
+                'amount' => (float) $data['amount'],
+                'paid_at' => $data['paid_at'] ? (string) $data['paid_at'] : null,
+                'summary' => [
+                    'count' => (int) data_get($meta, 'payment_summary.count'),
+                    'total_amount' => (float) data_get($meta, 'payment_summary.total_amount'),
+                ],
+            ],
+        ];
+        data_set($meta, 'audit', $audit);
+
         $order->meta = $meta;
         $order->save();
 
@@ -1007,6 +1028,27 @@ class PlatformOrderController extends Controller
             'last_channel' => (string) (data_get($latestRefund, 'channel') ?? ''),
         ]);
 
+        // 审计：追加退款回执（用于退款轨迹留痕）
+        $audit = (array) (data_get($meta, 'audit', []) ?? []);
+        $audit[] = [
+            'action' => 'add_refund_receipt',
+            'scope' => 'single',
+            'at' => $now->toDateTimeString(),
+            'admin_id' => $admin->id,
+            'note' => '追加退款回执（用于退款轨迹留痕）',
+            'snapshot' => [
+                'type' => (string) $data['type'],
+                'channel' => (string) ($data['channel'] ?? ''),
+                'amount' => (float) $data['amount'],
+                'refunded_at' => $data['refunded_at'] ? (string) $data['refunded_at'] : null,
+                'summary' => [
+                    'count' => (int) data_get($meta, 'refund_summary.count'),
+                    'total_amount' => (float) data_get($meta, 'refund_summary.total_amount'),
+                ],
+            ],
+        ];
+        data_set($meta, 'audit', $audit);
+
         // 可治理辅助：自动推进退款标记（仅当退款金额>0 时）
         // 注意：允许从 paid / partially_refunded 推进到 partially_refunded / refunded
         // 且不会把已 refunded 的订单降级。
diff --git a/tests/Feature/AdminPlatformOrderAddPaymentReceiptShouldWriteAuditTest.php b/tests/Feature/AdminPlatformOrderAddPaymentReceiptShouldWriteAuditTest.php
new file mode 100644
index 0000000..be2e5d2
--- /dev/null
+++ b/tests/Feature/AdminPlatformOrderAddPaymentReceiptShouldWriteAuditTest.php
@@ -0,0 +1,84 @@
+<?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 AdminPlatformOrderAddPaymentReceiptShouldWriteAuditTest 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_add_payment_receipt_will_write_audit_entry_and_keep_status_unchanged(): void
+    {
+        $this->loginAsPlatformAdmin();
+
+        $merchant = Merchant::query()->firstOrFail();
+        $plan = Plan::query()->create([
+            'code' => 'audit_payment_receipt_plan',
+            'name' => '审计回执用套餐',
+            'billing_cycle' => 'monthly',
+            'price' => 30,
+            'list_price' => 30,
+            'status' => 'active',
+            'sort' => 10,
+            'published_at' => now(),
+        ]);
+
+        $this->post('/admin/platform-orders', [
+            'merchant_id' => $merchant->id,
+            'plan_id' => $plan->id,
+            'order_type' => 'new_purchase',
+            'quantity' => 1,
+            'discount_amount' => 0,
+            'payment_channel' => 'bank_transfer',
+            'remark' => '审计回执测试',
+        ])->assertRedirect();
+
+        /** @var PlatformOrder $order */
+        $order = PlatformOrder::query()->latest('id')->firstOrFail();
+        $this->assertSame('unpaid', (string) $order->payment_status);
+        $this->assertSame('pending', (string) $order->status);
+
+        $this->post('/admin/platform-orders/' . $order->id . '/add-payment-receipt', [
+            'type' => 'bank_transfer',
+            'channel' => 'icbc',
+            'amount' => 30,
+            'paid_at' => now()->format('Y-m-d H:i:s'),
+            'note' => '财务确认',
+        ])->assertRedirect();
+
+        $order->refresh();
+
+        $this->assertSame('unpaid', (string) $order->payment_status);
+        $this->assertSame('pending', (string) $order->status);
+        $this->assertSame(1, (int) data_get($order->meta, 'payment_summary.count'));
+        $this->assertSame(30.0, (float) data_get($order->meta, 'payment_summary.total_amount'));
+
+        $audit = (array) (data_get($order->meta, 'audit', []) ?? []);
+        $this->assertNotEmpty($audit);
+
+        $last = end($audit);
+        $this->assertSame('add_payment_receipt', (string) data_get($last, 'action'));
+        $this->assertSame('single', (string) data_get($last, 'scope'));
+        $this->assertNotEmpty((string) data_get($last, 'at'));
+        $this->assertGreaterThan(0, (int) data_get($last, 'admin_id'));
+        $this->assertSame(30.0, (float) data_get($last, 'snapshot.amount'));
+        $this->assertSame('icbc', (string) data_get($last, 'snapshot.channel'));
+        $this->assertSame(1, (int) data_get($last, 'snapshot.summary.count'));
+        $this->assertSame(30.0, (float) data_get($last, 'snapshot.summary.total_amount'));
+    }
+}
diff --git a/tests/Feature/AdminPlatformOrderAddRefundReceiptShouldWriteAuditTest.php b/tests/Feature/AdminPlatformOrderAddRefundReceiptShouldWriteAuditTest.php
new file mode 100644
index 0000000..04a775e
--- /dev/null
+++ b/tests/Feature/AdminPlatformOrderAddRefundReceiptShouldWriteAuditTest.php
@@ -0,0 +1,97 @@
+<?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 AdminPlatformOrderAddRefundReceiptShouldWriteAuditTest 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_add_refund_receipt_will_write_audit_entry_and_auto_advance_payment_status(): void
+    {
+        $this->loginAsPlatformAdmin();
+
+        $merchant = Merchant::query()->firstOrFail();
+        $plan = Plan::query()->create([
+            'code' => 'audit_refund_receipt_plan',
+            'name' => '审计退款用套餐',
+            'billing_cycle' => 'monthly',
+            'price' => 30,
+            'list_price' => 30,
+            'status' => 'active',
+            'sort' => 10,
+            'published_at' => now(),
+        ]);
+
+        $this->post('/admin/platform-orders', [
+            'merchant_id' => $merchant->id,
+            'plan_id' => $plan->id,
+            'order_type' => 'new_purchase',
+            'quantity' => 1,
+            'discount_amount' => 0,
+            'payment_channel' => 'bank_transfer',
+            'remark' => '审计退款测试',
+        ])->assertRedirect();
+
+        /** @var PlatformOrder $order */
+        $order = PlatformOrder::query()->latest('id')->firstOrFail();
+
+        // 先让订单进入 paid，便于验证 addRefundReceipt 的“自动推进支付状态”口径
+        $this->post('/admin/platform-orders/' . $order->id . '/add-payment-receipt', [
+            'type' => 'bank_transfer',
+            'channel' => 'icbc',
+            'amount' => 30,
+            'paid_at' => now()->format('Y-m-d H:i:s'),
+            'note' => '财务确认',
+        ])->assertRedirect();
+
+        $this->post('/admin/platform-orders/' . $order->id . '/mark-paid-and-activate')
+            ->assertRedirect();
+
+        $order->refresh();
+        $this->assertSame('paid', (string) $order->payment_status);
+        $this->assertSame('activated', (string) $order->status);
+
+        // 追加一笔部分退款
+        $this->post('/admin/platform-orders/' . $order->id . '/add-refund-receipt', [
+            'type' => 'refund',
+            'channel' => 'icbc',
+            'amount' => 10,
+            'refunded_at' => now()->format('Y-m-d H:i:s'),
+            'note' => '部分退款',
+        ])->assertRedirect();
+
+        $order->refresh();
+        $this->assertSame('partially_refunded', (string) $order->payment_status);
+        $this->assertSame(1, (int) data_get($order->meta, 'refund_summary.count'));
+        $this->assertSame(10.0, (float) data_get($order->meta, 'refund_summary.total_amount'));
+
+        $audit = (array) (data_get($order->meta, 'audit', []) ?? []);
+        $this->assertNotEmpty($audit);
+
+        $last = end($audit);
+        $this->assertSame('add_refund_receipt', (string) data_get($last, 'action'));
+        $this->assertSame('single', (string) data_get($last, 'scope'));
+        $this->assertNotEmpty((string) data_get($last, 'at'));
+        $this->assertGreaterThan(0, (int) data_get($last, 'admin_id'));
+        $this->assertSame(10.0, (float) data_get($last, 'snapshot.amount'));
+        $this->assertSame('icbc', (string) data_get($last, 'snapshot.channel'));
+        $this->assertSame(1, (int) data_get($last, 'snapshot.summary.count'));
+        $this->assertSame(10.0, (float) data_get($last, 'snapshot.summary.total_amount'));
+    }
+}