diff --git a/backend/app/database/db_mysql.py b/backend/app/database/db_mysql.py
index 3071a947..f895234b 100644
--- a/backend/app/database/db_mysql.py
+++ b/backend/app/database/db_mysql.py
@@ -2,12 +2,12 @@
 # -*- coding: utf-8 -*-
 import sys
 
+from typing import Annotated
 from uuid import uuid4
 
 from fastapi import Depends
 from sqlalchemy import URL
 from sqlalchemy.ext.asyncio import AsyncSession, async_sessionmaker, create_async_engine
-from typing_extensions import Annotated
 
 from backend.app.common.log import log
 from backend.app.core.conf import settings
diff --git a/backend/app/models/base.py b/backend/app/models/base.py
index 0a7f1f4c..500b1300 100644
--- a/backend/app/models/base.py
+++ b/backend/app/models/base.py
@@ -1,9 +1,9 @@
 #!/usr/bin/env python3
 # -*- coding: utf-8 -*-
 from datetime import datetime
+from typing import Annotated
 
 from sqlalchemy.orm import DeclarativeBase, Mapped, MappedAsDataclass, declared_attr, mapped_column
-from typing_extensions import Annotated
 
 from backend.app.utils.timezone import timezone
 
diff --git a/backend/app/schemas/api.py b/backend/app/schemas/api.py
index be1892c2..aaf3b08f 100644
--- a/backend/app/schemas/api.py
+++ b/backend/app/schemas/api.py
@@ -2,7 +2,7 @@
 # -*- coding: utf-8 -*-
 from datetime import datetime
 
-from pydantic import ConfigDict, Field, field_validator
+from pydantic import ConfigDict, Field
 
 from backend.app.common.enums import MethodType
 from backend.app.schemas.base import SchemaBase
@@ -14,13 +14,6 @@ class ApiSchemaBase(SchemaBase):
     path: str = Field(..., description='api路径')
     remark: str | None = None
 
-    @field_validator('method')
-    @classmethod
-    def method_validator(cls, v):
-        if not v.isupper():
-            raise ValueError('请求方式必须大写')
-        return v
-
 
 class CreateApiParam(ApiSchemaBase):
     pass
diff --git a/backend/app/schemas/base.py b/backend/app/schemas/base.py
index 6c92649d..00b54425 100644
--- a/backend/app/schemas/base.py
+++ b/backend/app/schemas/base.py
@@ -1,6 +1,7 @@
 #!/usr/bin/env python3
 # -*- coding: utf-8 -*-
-from pydantic import BaseModel, ConfigDict
+
+from pydantic import BaseModel, ConfigDict, EmailStr, validate_email
 from pydantic_extra_types.phone_numbers import PhoneNumber
 
 # 自定义验证错误信息不包含验证预期内容（也就是输入内容），受支持的预期内容字段参考以下链接
@@ -142,5 +143,11 @@ class CustomPhoneNumber(PhoneNumber):
     default_region_code = 'CN'
 
 
+class CustomEmailStr(EmailStr):
+    @classmethod
+    def _validate(cls, __input_value: str) -> str:
+        return None if __input_value == '' else validate_email(__input_value)[1]
+
+
 class SchemaBase(BaseModel):
     model_config = ConfigDict(use_enum_values=True)
diff --git a/backend/app/schemas/casbin_rule.py b/backend/app/schemas/casbin_rule.py
index c41488a8..698d92ff 100644
--- a/backend/app/schemas/casbin_rule.py
+++ b/backend/app/schemas/casbin_rule.py
@@ -1,6 +1,6 @@
 #!/usr/bin/env python3
 # -*- coding: utf-8 -*-
-from pydantic import ConfigDict, Field, field_validator
+from pydantic import ConfigDict, Field
 
 from backend.app.common.enums import MethodType
 from backend.app.schemas.base import SchemaBase
@@ -11,13 +11,6 @@ class CreatePolicyParam(SchemaBase):
     path: str = Field(..., description='api 路径')
     method: MethodType = Field(default=MethodType.GET, description='请求方法')
 
-    @field_validator('method')
-    @classmethod
-    def method_validator(cls, v):
-        if not v.isupper():
-            raise ValueError('请求方式必须大写')
-        return v
-
 
 class UpdatePolicyParam(CreatePolicyParam):
     pass
diff --git a/backend/app/schemas/dept.py b/backend/app/schemas/dept.py
index 7bd6add9..c99b5a70 100644
--- a/backend/app/schemas/dept.py
+++ b/backend/app/schemas/dept.py
@@ -2,10 +2,10 @@
 # -*- coding: utf-8 -*-
 from datetime import datetime
 
-from pydantic import ConfigDict, EmailStr, Field
+from pydantic import ConfigDict, Field
 
 from backend.app.common.enums import StatusType
-from backend.app.schemas.base import CustomPhoneNumber, SchemaBase
+from backend.app.schemas.base import CustomEmailStr, CustomPhoneNumber, SchemaBase
 
 
 class DeptSchemaBase(SchemaBase):
@@ -14,7 +14,7 @@ class DeptSchemaBase(SchemaBase):
     sort: int = Field(default=0, ge=0, description='排序')
     leader: str | None = None
     phone: CustomPhoneNumber | None = None
-    email: EmailStr | None = None
+    email: CustomEmailStr | None = None
     status: StatusType = Field(default=StatusType.enable)