diff --git a/resources/views/admin/platform_orders/show.blade.php b/resources/views/admin/platform_orders/show.blade.php
index 2889acf..ddd503b 100644
--- a/resources/views/admin/platform_orders/show.blade.php
+++ b/resources/views/admin/platform_orders/show.blade.php
@@ -72,7 +72,9 @@
                 <span class="badge">来源线索：#{{ $leadIdFromBack }}</span>
             @endif
 
-            <a href="{!! $makePlatformOrderIndexUrl([]) !!}" class="btn btn-secondary btn-sm">返回平台订单列表（保留上下文）</a>
+            @if($safeBackForLinks === '')
+                <a href="{!! $makePlatformOrderIndexUrl([]) !!}" class="btn btn-secondary btn-sm">返回平台订单列表（保留上下文）</a>
+            @endif
         </div>
     </div>
 </div>
diff --git a/tests/Feature/AdminPlatformOrderShowIndexLinkKeepsContextTest.php b/tests/Feature/AdminPlatformOrderShowIndexLinkKeepsContextTest.php
index 8d0269b..740da79 100644
--- a/tests/Feature/AdminPlatformOrderShowIndexLinkKeepsContextTest.php
+++ b/tests/Feature/AdminPlatformOrderShowIndexLinkKeepsContextTest.php
@@ -68,5 +68,20 @@ class AdminPlatformOrderShowIndexLinkKeepsContextTest extends TestCase
 
         $res->assertSee('返回平台订单列表（保留上下文）');
         $res->assertSee($expectedIndexUrl, false);
+
+        // 明确 back 为空时，也应显示该按钮（作为兜底返回列表入口）
+        $res2 = $this->get('/admin/platform-orders/' . $order->id . '?' . Arr::query([
+            'back' => '',
+        ]));
+        $res2->assertOk();
+        $res2->assertSee('返回平台订单列表（保留上下文）');
+
+        // 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）
+        $res3 = $this->get('/admin/platform-orders/' . $order->id . '?' . Arr::query([
+            'back' => '/admin',
+        ]));
+        $res3->assertOk();
+        $res3->assertSee('← 返回上一页（保留上下文）');
+        $res3->assertDontSee('返回平台订单列表（保留上下文）');
     }
 }