diff --git a/CHANGELOG.md b/CHANGELOG.md
index 3512fd0..59e26be 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -2,6 +2,11 @@
 
 ## 0.3
 
+### 0.3.2
+
+- Hide menu when no children menu.
+- Add custom filters.
+
 ### 0.3.1
 
 - Auto register permission.
diff --git a/examples/filters.py b/examples/filters.py
new file mode 100644
index 0000000..51e7256
--- /dev/null
+++ b/examples/filters.py
@@ -0,0 +1,28 @@
+from typing import Any
+
+from tortoise import QuerySet
+from tortoise.query_utils import Q
+
+from fastapi_admin.filters import Filter, SearchFilter, register_filter
+from fastapi_admin.site import Field
+
+
+class CustomFilter(Filter):
+    @classmethod
+    def get_queryset(cls, queryset: QuerySet) -> QuerySet:
+        return queryset.filter(~Q(key="test"))
+
+
+@register_filter
+class LikeFilter(SearchFilter):
+    @classmethod
+    def get_queryset(cls, queryset: QuerySet, value: Any) -> QuerySet:
+        return queryset.filter(name__icontains=value)
+
+    @classmethod
+    async def get_field(cls) -> Field:
+        return Field(label="NameLike", type="text")
+
+    @classmethod
+    def get_name(cls) -> str:
+        return "filter"
diff --git a/examples/main.py b/examples/main.py
index 58c6751..e068ae9 100644
--- a/examples/main.py
+++ b/examples/main.py
@@ -3,14 +3,11 @@ import os
 import uvicorn
 from fastapi import Depends, FastAPI
 from starlette.middleware.cors import CORSMiddleware
-from starlette.requests import Request
 from starlette.templating import Jinja2Templates
 from tortoise.contrib.fastapi import register_tortoise
 from tortoise.contrib.pydantic import pydantic_queryset_creator
-from tortoise.exceptions import IntegrityError
 
-from examples.common import get_client_ip
-from examples.models import Visitor
+from examples.filters import CustomFilter, LikeFilter
 from fastapi_admin.depends import get_model
 from fastapi_admin.factory import app as admin_app
 from fastapi_admin.schemas import BulkIn
@@ -56,18 +53,6 @@ def create_app():
 app = create_app()
 
 
-@app.middleware("http")
-async def add_process_time_header(request: Request, call_next):
-    ip = get_client_ip(request)
-    v = await Visitor.get_or_none(ip=ip)
-    try:
-        await v.save() if v else await Visitor.create(ip=ip)
-    except IntegrityError:
-        pass
-    response = await call_next(request)
-    return response
-
-
 @app.on_event("startup")
 async def start_up():
     await admin_app.init(  # nosec
@@ -90,7 +75,7 @@ async def start_up():
                             name="Category",
                             url="/rest/Category",
                             icon="fa fa-list",
-                            search_fields=("slug",),
+                            search_fields=("slug", LikeFilter),
                         ),
                         Menu(
                             name="Config",
@@ -98,6 +83,7 @@ async def start_up():
                             icon="fa fa-gear",
                             import_=True,
                             search_fields=("key",),
+                            custom_filters=[CustomFilter],
                         ),
                         Menu(
                             name="Product",
@@ -105,9 +91,6 @@ async def start_up():
                             icon="fa fa-table",
                             search_fields=("name",),
                         ),
-                        Menu(
-                            name="Visitor", url="/rest/Visitor", icon="fa fa-child", exclude=("ip",)
-                        ),
                     ],
                 ),
                 Menu(
diff --git a/fastapi_admin/__init__.py b/fastapi_admin/__init__.py
index dcf4f71..0202887 100644
--- a/fastapi_admin/__init__.py
+++ b/fastapi_admin/__init__.py
@@ -5,4 +5,4 @@ def version():
     # with open("pyproject.toml") as f:
     #     ret = re.findall(r'version = "(\d+\.\d+\.\d+)"', f.read())
     #     return ret[0]
-    return "0.3.1"
+    return "0.3.2"
diff --git a/fastapi_admin/depends.py b/fastapi_admin/depends.py
index a093d2d..1fcdf24 100644
--- a/fastapi_admin/depends.py
+++ b/fastapi_admin/depends.py
@@ -1,5 +1,4 @@
 import json
-from typing import Optional
 
 import jwt
 from fastapi import Depends, HTTPException, Path, Query
diff --git a/fastapi_admin/factory.py b/fastapi_admin/factory.py
index 0448847..9a145c8 100644
--- a/fastapi_admin/factory.py
+++ b/fastapi_admin/factory.py
@@ -8,6 +8,7 @@ from tortoise import Model
 from . import enums
 from .common import get_all_models, import_obj, pwd_context
 from .exceptions import exception_handler
+from .filters import SearchFilter
 from .models import AbstractAdminLog, AbstractPermission, AbstractRole, AbstractUser
 from .schemas import LoginIn
 from .shortcuts import get_object_or_404
@@ -244,6 +245,11 @@ class AdminApp(FastAPI):
         sort_fields = menu.sort_fields
         fields = {}
         pk = name = pk_field.get("name")
+        # CustomSearchFilters
+        for search_filter in filter(
+            lambda x: type(x).__name__ == "type" and issubclass(x, SearchFilter), search_fields
+        ):
+            search_fields_ret[search_filter.get_name()] = await search_filter.get_field()
         if not exclude_pk and not self._exclude_field(resource, name):
             field = Field(
                 label=pk_field.get("name").title(),
diff --git a/fastapi_admin/filters.py b/fastapi_admin/filters.py
new file mode 100644
index 0000000..96083f2
--- /dev/null
+++ b/fastapi_admin/filters.py
@@ -0,0 +1,36 @@
+from typing import Any
+
+from tortoise import QuerySet
+
+from fastapi_admin.site import Field
+
+_search_filters = {}
+
+
+class Filter:
+    @classmethod
+    def get_queryset(cls, queryset: QuerySet) -> QuerySet:
+        raise NotImplementedError
+
+
+class SearchFilter:
+    @classmethod
+    def get_queryset(cls, queryset: QuerySet, option: Any) -> QuerySet:
+        raise NotImplementedError
+
+    @classmethod
+    async def get_field(cls) -> Field:
+        raise NotImplementedError
+
+    @classmethod
+    def get_name(cls) -> str:
+        raise NotImplementedError
+
+
+def register_filter(cls: SearchFilter):
+    _search_filters[cls.get_name()] = cls
+    return cls
+
+
+def get_filter_by_name(name: str):
+    return _search_filters.get(name)
diff --git a/fastapi_admin/routes/rest.py b/fastapi_admin/routes/rest.py
index e624719..babd24d 100644
--- a/fastapi_admin/routes/rest.py
+++ b/fastapi_admin/routes/rest.py
@@ -27,6 +27,7 @@ from ..depends import (
     update_checker,
 )
 from ..factory import app
+from ..filters import get_filter_by_name
 from ..responses import GetManyOut
 from ..schemas import BulkIn
 from ..shortcuts import get_object_or_404
@@ -83,8 +84,15 @@ async def get_resource(
 ):
     menu = app.model_menu_mapping[resource]
     qs = model.all()
+    for filter_ in menu.custom_filters:
+        qs = filter_.get_queryset(qs)
     if query.where:
-        qs = qs.filter(**query.where)
+        for name, value in query.where.items():
+            filter_cls = get_filter_by_name(name)
+            if filter_cls:
+                qs = filter_cls.get_queryset(qs, value)
+            else:
+                qs = qs.filter(**{name: value})
     sort = query.sort
     for k, v in sort.items():
         if k in menu.sort_fields:
diff --git a/fastapi_admin/routes/site.py b/fastapi_admin/routes/site.py
index 976b444..a443f08 100644
--- a/fastapi_admin/routes/site.py
+++ b/fastapi_admin/routes/site.py
@@ -30,4 +30,5 @@ async def site(user_id=Depends(jwt_optional)):
                         model = child.url.split("/")[-1]
                         if not await check_has_permission(user, model):
                             site_copy.menus[index].children.remove(child)
+    site_copy.menus = list(filter(lambda x: x.children != [], site_copy.menus))
     return site_copy.dict(by_alias=True, exclude_unset=True)
diff --git a/fastapi_admin/site.py b/fastapi_admin/site.py
index c871bcd..83f657c 100644
--- a/fastapi_admin/site.py
+++ b/fastapi_admin/site.py
@@ -19,7 +19,7 @@ class Menu(BaseModel):
     # raw id fields
     raw_id_fields: Optional[Tuple[str, ...]] = tuple()
     # searchable fields
-    search_fields: Optional[Tuple[str, ...]] = tuple()
+    search_fields = tuple()
     # sortable fields
     sort_fields: Optional[Tuple[str, ...]] = tuple()
     # define field type,like select,radiolist,text,date
@@ -31,6 +31,7 @@ class Menu(BaseModel):
     import_: bool = False
     actions: Optional[Dict]
     bulk_actions: List[Dict] = [{"value": "delete", "text": "delete_all"}]
+    custom_filters: List = []
 
 
 Menu.update_forward_refs()
diff --git a/pyproject.toml b/pyproject.toml
index 5a01c98..e3bf45d 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -1,6 +1,6 @@
 [tool.poetry]
 name = "fastapi-admin"
-version = "0.3.1"
+version = "0.3.2"
 description = "Fast Admin Dashboard based on fastapi and tortoise-orm."
 authors = ["long2ice <long2ice@gmail.com>"]
 license = "Apache-2.0"