diff --git a/app/api/endpoints/site.py b/app/api/endpoints/site.py
index e1dcae9dc..08c932a12 100644
--- a/app/api/endpoints/site.py
+++ b/app/api/endpoints/site.py
@@ -580,14 +580,14 @@ def auth_site(
     response_model=_SchemaResponse[_SchemaSiteMappingData],
 )
 async def site_mapping(
-    query: SiteQueryService = Depends(get_site_sync_query_service),
+    query: SiteQueryService = Depends(get_site_query_service),
     _: ApiPrincipal = Depends(get_current_active_superuser_async),
 ):
     """
     获取站点域名到名称的映射关系
     """
     try:
-        sites = query.list_sync()
+        sites = await query.list_ordered()
         mapping = {}
         for site in sites:
             mapping[site.domain] = site.name
diff --git a/tests/test_site_media_filter.py b/tests/test_site_media_filter.py
index b386bb5b3..0ab2be6cc 100644
--- a/tests/test_site_media_filter.py
+++ b/tests/test_site_media_filter.py
@@ -82,3 +82,24 @@ def test_read_sites_by_media_type_rejects_unknown_type():
 
     assert error.value.status_code == 400
     assert error.value.detail == "不支持的媒体类型"
+
+
+def test_site_mapping_uses_async_query_port():
+    """异步站点映射不得在事件循环内调用同步数据库查询。"""
+    sites = [
+        SimpleNamespace(domain="one.example", name="One"),
+        SimpleNamespace(domain="two.example", name="Two"),
+    ]
+    query = SimpleNamespace(
+        list_ordered=AsyncMock(return_value=sites),
+        list_sync=pytest.fail,
+    )
+
+    result = asyncio.run(site_endpoint.site_mapping(query=query))
+
+    assert result.success is True
+    assert result.data == {
+        "one.example": "One",
+        "two.example": "Two",
+    }
+    query.list_ordered.assert_awaited_once()