diff --git a/app/application/site/mutation.py b/app/application/site/mutation.py
index ef998aee4..5794da621 100644
--- a/app/application/site/mutation.py
+++ b/app/application/site/mutation.py
@@ -21,7 +21,7 @@ class SiteMutationRepository(Protocol):
         """读取指定站点。"""
         ...
 
-    async def get_by_domain(self, domain: str) -> Optional[Any]:
+    async def async_get_by_domain(self, domain: str) -> Optional[Any]:
         """按域名读取站点。"""
         ...
 
@@ -90,7 +90,7 @@ class SiteMutationCommand:
         site_info = await self._indexer_loader(domain)
         if not site_info:
             return SiteMutationResult(False, "该站点不支持，请检查站点域名是否正确")
-        if await self._repository.get_by_domain(domain):
+        if await self._repository.async_get_by_domain(domain):
             return SiteMutationResult(False, f"{domain} 站点己存在")
 
         values.update({
diff --git a/app/db/oper/site.py b/app/db/oper/site.py
index b367b90d5..14a85e5fa 100644
--- a/app/db/oper/site.py
+++ b/app/db/oper/site.py
@@ -41,10 +41,6 @@ class SiteOper(DbOper):
         """读取站点写用例需要的目标站点。"""
         return await self.async_get(site_id)
 
-    async def get_by_domain(self, domain: str) -> Optional[Site]:
-        """按域名读取站点写用例的重复目标。"""
-        return await Site.async_get_by_domain(self._db, domain)
-
     async def stage_create(self, payload: Mapping[str, Any]) -> None:
         """暂存新增站点，不由仓储自行提交。"""
         values = dict(payload)
diff --git a/tests/test_site_mutation_command.py b/tests/test_site_mutation_command.py
index bad75ec91..0e1a5c370 100644
--- a/tests/test_site_mutation_command.py
+++ b/tests/test_site_mutation_command.py
@@ -9,7 +9,7 @@ def _command(**overrides):
     """构造可观察站点写用例及其依赖。"""
     repository = Mock()
     repository.get_by_id = AsyncMock(return_value=object())
-    repository.get_by_domain = AsyncMock(return_value=None)
+    repository.async_get_by_domain = AsyncMock(return_value=None)
     repository.stage_create = AsyncMock()
     repository.stage_update = AsyncMock(return_value=True)
     repository.stage_delete = AsyncMock()