diff --git a/resources/views/admin/site_subscriptions/show.blade.php b/resources/views/admin/site_subscriptions/show.blade.php
index 59f75a4..f7ae22a 100644
--- a/resources/views/admin/site_subscriptions/show.blade.php
+++ b/resources/views/admin/site_subscriptions/show.blade.php
@@ -50,8 +50,9 @@
         <div class="page-header-actions">
             @if($safeBackForLinks !== '')
                 <a href="{!! $safeBackForLinks !!}" class="btn btn-secondary btn-sm">返回上一页（保留上下文）</a>
+            @else
+                <a href="{!! $makeSubscriptionIndexUrl([]) !!}" class="btn btn-secondary btn-sm">返回订阅列表（保留上下文）</a>
             @endif
-            <a href="{!! $makeSubscriptionIndexUrl([]) !!}" class="btn btn-secondary btn-sm">返回订阅列表（保留上下文）</a>
         </div>
     </div>
 
diff --git a/tests/Feature/AdminSiteSubscriptionShowIndexLinkKeepsContextTest.php b/tests/Feature/AdminSiteSubscriptionShowIndexLinkKeepsContextTest.php
index 656c551..24f75e3 100644
--- a/tests/Feature/AdminSiteSubscriptionShowIndexLinkKeepsContextTest.php
+++ b/tests/Feature/AdminSiteSubscriptionShowIndexLinkKeepsContextTest.php
@@ -66,5 +66,13 @@ class AdminSiteSubscriptionShowIndexLinkKeepsContextTest extends TestCase
 
         $res->assertSee('返回订阅列表（保留上下文）');
         $res->assertSee($expectedIndexUrl, false);
+
+        // 当传入有效 back 时，应优先显示“返回上一页”并隐藏该兜底按钮（避免重复入口噪音）
+        $res2 = $this->get('/admin/site-subscriptions/' . $sub->id . '?' . Arr::query([
+            'back' => '/admin',
+        ]));
+        $res2->assertOk();
+        $res2->assertSee('返回上一页（保留上下文）');
+        $res2->assertDontSee('返回订阅列表（保留上下文）');
     }
 }