diff --git a/packages/application/auth/__init__.py b/packages/application/auth/__init__.py
index 2e1cb7054..8a4cc7cf2 100644
--- a/packages/application/auth/__init__.py
+++ b/packages/application/auth/__init__.py
@@ -1,5 +1,6 @@
 """认证相关 Use Cases 和委托处理器"""
 
+from packages.application.auth.password_hasher import password_hasher, password_validator
 from packages.application.auth.login_use_case import (
     LoginRequest,
     LoginResponse,
@@ -58,4 +59,6 @@ __all__ = [
     "PasswordHandler",
     "configure_password_handler",
     "get_password_handler",
+    "password_hasher",
+    "password_validator",
 ]
diff --git a/packages/application/auth/register_user_use_case.py b/packages/application/auth/register_user_use_case.py
index 7f17ff2b4..f58079483 100755
--- a/packages/application/auth/register_user_use_case.py
+++ b/packages/application/auth/register_user_use_case.py
@@ -8,7 +8,7 @@ from typing import Optional
 from uuid import uuid4
 
 from packages.adapters.smtp import get_email_service
-from packages.application.auth import password_hasher, password_validator
+from packages.application.auth.password_hasher import password_hasher, password_validator
 from packages.domain.entities import User
 
 
diff --git a/tests/unit/test_auth.py b/tests/unit/test_auth.py
index 142918582..27118cc8a 100644
--- a/tests/unit/test_auth.py
+++ b/tests/unit/test_auth.py
@@ -28,7 +28,7 @@ from app.config import settings
 from packages.adapters.smtp import NoopEmailService
 from packages.application.auth.login_use_case import LoginRequest, LoginUseCase
 from packages.application.auth.register_user_use_case import RegisterUserRequest, RegisterUserUseCase
-from packages.application.auth import password_hasher
+from packages.application.auth.password_hasher import password_hasher
 from packages.domain.entities import User
 
 
diff --git a/tests/unit/test_auth_middleware.py b/tests/unit/test_auth_middleware.py
index bf1046bd4..a956cbce8 100644
--- a/tests/unit/test_auth_middleware.py
+++ b/tests/unit/test_auth_middleware.py
@@ -15,7 +15,7 @@ if str(API_ROOT) not in sys.path:
 from app.config import settings
 from app.middleware.auth import get_current_user, get_current_user_optional, require_workspace_access
 
-from packages.application.auth import password_hasher
+from packages.application.auth.password_hasher import password_hasher
 from packages.domain.entities import User
 
 
diff --git a/tests/unit/test_login_use_case.py b/tests/unit/test_login_use_case.py
index 4ef8e0401..8129b5021 100644
--- a/tests/unit/test_login_use_case.py
+++ b/tests/unit/test_login_use_case.py
@@ -13,7 +13,7 @@ from packages.application.auth import (
     LogoutRequest,
     LogoutUseCase,
 )
-from packages.application.auth import password_hasher
+from packages.application.auth.password_hasher import password_hasher
 from packages.domain.entities import User
 
 
diff --git a/tests/unit/test_workspace_sqlalchemy_repositories.py b/tests/unit/test_workspace_sqlalchemy_repositories.py
index d611c2ee6..b1853e99e 100644
--- a/tests/unit/test_workspace_sqlalchemy_repositories.py
+++ b/tests/unit/test_workspace_sqlalchemy_repositories.py
@@ -10,7 +10,7 @@ from packages.application.workspace.create_workspace_use_case import CreateWorks
 from packages.application.workspace.invite_member_use_case import InviteMemberRequest, InviteMemberUseCase
 from packages.application.workspace.list_members_use_case import ListMembersRequest, ListMembersUseCase
 from packages.application.workspace.list_workspaces_use_case import ListWorkspacesRequest, ListWorkspacesUseCase
-from packages.application.auth import password_hasher
+from packages.application.auth.password_hasher import password_hasher
 from packages.domain.entities import User