diff --git a/tests/Feature/AdminSiteSubscriptionShowPaidNoReceiptGovernanceLinkShouldUseSubscriptionShowSelfBackTest.php b/tests/Feature/AdminSiteSubscriptionShowPaidNoReceiptGovernanceLinkShouldUseSubscriptionShowSelfBackTest.php
new file mode 100644
index 0000000..2764c16
--- /dev/null
+++ b/tests/Feature/AdminSiteSubscriptionShowPaidNoReceiptGovernanceLinkShouldUseSubscriptionShowSelfBackTest.php
@@ -0,0 +1,75 @@
+<?php
+
+namespace Tests\Feature;
+
+use App\Models\Merchant;
+use App\Models\Plan;
+use App\Models\SiteSubscription;
+use Illuminate\Foundation\Testing\RefreshDatabase;
+use Illuminate\Support\Arr;
+use Tests\TestCase;
+
+class AdminSiteSubscriptionShowPaidNoReceiptGovernanceLinkShouldUseSubscriptionShowSelfBackTest 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_paid_no_receipt_governance_link_should_use_subscription_show_self_as_back(): void
+    {
+        $this->loginAsPlatformAdmin();
+
+        $merchant = Merchant::query()->firstOrFail();
+        $plan = Plan::query()->create([
+            'code' => 'sub_show_paid_no_receipt_back_plan',
+            'name' => '订阅详情已付无回执入口 back 口径测试套餐',
+            'billing_cycle' => 'monthly',
+            'price' => 199,
+            'list_price' => 199,
+            'status' => 'active',
+            'sort' => 10,
+            'published_at' => now(),
+        ]);
+
+        $subscription = SiteSubscription::query()->create([
+            'merchant_id' => $merchant->id,
+            'plan_id' => $plan->id,
+            'status' => 'active',
+            'source' => 'manual',
+            'subscription_no' => 'SS_SHOW_PNR_BACK_0001',
+            'plan_name' => $plan->name,
+            'billing_cycle' => $plan->billing_cycle,
+            'period_months' => 1,
+            'amount' => 199,
+            'starts_at' => now()->subDay(),
+            'ends_at' => now()->addMonth(),
+        ]);
+
+        $res = $this->get('/admin/site-subscriptions/' . $subscription->id . '?back=' . urlencode('/admin/site-subscriptions?status=activated'));
+        $res->assertOk();
+
+        $expectedUrl = '/admin/platform-orders?' . Arr::query([
+            'merchant_id' => $merchant->id,
+            'plan_id' => $plan->id,
+            'payment_status' => 'paid',
+            'receipt_status' => 'none',
+            'back' => '/admin/site-subscriptions/' . $subscription->id,
+        ]);
+
+        $html = (string) $res->getContent();
+        $matched = preg_match('/<a[^>]+href="([^"]+)"[^>]*>\s*查看已付无回执订单（同站点\/同套餐）\s*<\/a>/u', $html, $m);
+        $this->assertSame(1, $matched, '未找到订阅详情页“查看已付无回执订单（同站点/同套餐）”入口');
+
+        $href = html_entity_decode($m[1] ?? '');
+        $this->assertSame($expectedUrl, $href);
+        $this->assertStringNotContainsString(urlencode('/admin/site-subscriptions?status=activated'), $href);
+    }
+}