diff --git a/src/plugins/nonebot_bison/config.py b/src/plugins/nonebot_bison/config.py
index 770b090..0712fcb 100644
--- a/src/plugins/nonebot_bison/config.py
+++ b/src/plugins/nonebot_bison/config.py
@@ -1,7 +1,7 @@
 from collections import defaultdict
 from os import path
 import os
-from typing import DefaultDict, Mapping
+from typing import DefaultDict, Literal, Mapping, TypedDict
 
 import nonebot
 from nonebot import logger
@@ -34,6 +34,18 @@ class NoSuchUserException(Exception):
 class NoSuchSubscribeException(Exception):
     pass
 
+class SubscribeContent(TypedDict):
+    target: str
+    target_type: str
+    target_name: str
+    cats: list[int]
+    tags: list[str]
+
+class ConfigContent(TypedDict):
+    user: str
+    user_type: Literal["group", "private"]
+    subs: list[SubscribeContent]
+
 class Config(metaclass=Singleton):
 
     migrate_version = 2
@@ -64,7 +76,7 @@ class Config(metaclass=Singleton):
             })
         self.update_send_cache()
 
-    def list_subscribe(self, user, user_type):
+    def list_subscribe(self, user, user_type) -> list[SubscribeContent]:
         query = Query()
         if user_sub := self.user_target.get((query.user == user) & (query.user_type ==user_type)):
             return user_sub['subs']
diff --git a/src/plugins/nonebot_bison/platform/__init__.py b/src/plugins/nonebot_bison/platform/__init__.py
index bc66380..028f002 100644
--- a/src/plugins/nonebot_bison/platform/__init__.py
+++ b/src/plugins/nonebot_bison/platform/__init__.py
@@ -14,7 +14,7 @@ async def check_sub_target(target_type, target):
     return await platform_manager[target_type].get_target_name(target)
 
 _platform_list = defaultdict(list)
-for _platform in Platform.registory:
+for _platform in Platform.registry:
     if not _platform.enabled:
         continue
     _platform_list[_platform.platform_name].append(_platform)
diff --git a/src/plugins/nonebot_bison/platform/arknights.py b/src/plugins/nonebot_bison/platform/arknights.py
index 6015a02..fb25729 100644
--- a/src/plugins/nonebot_bison/platform/arknights.py
+++ b/src/plugins/nonebot_bison/platform/arknights.py
@@ -7,10 +7,10 @@ import httpx
 from ..post import Post
 from ..types import Category, RawPost, Target
 from ..utils import Render
-from .platform import CategoryNotSupport, NewMessage, NoTargetMixin, StatusChange
+from .platform import CategoryNotSupport, NewMessage, StatusChange
 
 
-class Arknights(NewMessage, NoTargetMixin):
+class Arknights(NewMessage):
 
     categories = {1: '游戏公告'}
     platform_name = 'arknights'
@@ -20,6 +20,7 @@ class Arknights(NewMessage, NoTargetMixin):
     is_common = False
     schedule_type = 'interval'
     schedule_kw = {'seconds': 30}
+    has_target = False
 
     async def get_target_name(self, _: Target) -> str:
         return '明日方舟游戏信息'
@@ -60,7 +61,7 @@ class Arknights(NewMessage, NoTargetMixin):
             raise CategoryNotSupport()
         return Post('arknights', text=text, url='', target_name="明日方舟游戏内公告", pics=pics, compress=True, override_use_pic=False)
 
-class AkVersion(NoTargetMixin, StatusChange):
+class AkVersion(StatusChange):
 
     categories = {2: '更新信息'}
     platform_name = 'arknights'
@@ -70,6 +71,7 @@ class AkVersion(NoTargetMixin, StatusChange):
     is_common = False
     schedule_type = 'interval'
     schedule_kw = {'seconds': 30}
+    has_target = False
 
     async def get_target_name(self, _: Target) -> str:
         return '明日方舟游戏信息'
@@ -104,7 +106,7 @@ class AkVersion(NoTargetMixin, StatusChange):
     async def parse(self, raw_post):
         return raw_post
 
-class MonsterSiren(NewMessage, NoTargetMixin):
+class MonsterSiren(NewMessage):
 
     categories = {3: '塞壬唱片新闻'}
     platform_name = 'arknights'
@@ -114,6 +116,7 @@ class MonsterSiren(NewMessage, NoTargetMixin):
     is_common = False
     schedule_type = 'interval'
     schedule_kw = {'seconds': 30}
+    has_target = False
 
     async def get_target_name(self, _: Target) -> str:
         return '明日方舟游戏信息'
diff --git a/src/plugins/nonebot_bison/platform/bilibili.py b/src/plugins/nonebot_bison/platform/bilibili.py
index b46d364..8980eb1 100644
--- a/src/plugins/nonebot_bison/platform/bilibili.py
+++ b/src/plugins/nonebot_bison/platform/bilibili.py
@@ -5,9 +5,9 @@ import httpx
 
 from ..post import Post
 from ..types import Category, RawPost, Tag, Target
-from .platform import NewMessage, TargetMixin, CategoryNotSupport
+from .platform import NewMessage, CategoryNotSupport
 
-class Bilibili(NewMessage, TargetMixin):
+class Bilibili(NewMessage):
 
     categories = {
             1: "一般动态",
@@ -24,6 +24,7 @@ class Bilibili(NewMessage, TargetMixin):
     schedule_type = 'interval'
     schedule_kw = {'seconds': 10}
     name = 'B站'
+    has_target = True
 
     async def get_target_name(self, target: Target) -> Optional[str]:
         async with httpx.AsyncClient() as client:
diff --git a/src/plugins/nonebot_bison/platform/ncm_artist.py b/src/plugins/nonebot_bison/platform/ncm_artist.py
index 28664c9..e230f65 100644
--- a/src/plugins/nonebot_bison/platform/ncm_artist.py
+++ b/src/plugins/nonebot_bison/platform/ncm_artist.py
@@ -3,9 +3,9 @@ from typing import Any, Optional
 import httpx
 from ..post import Post
 from ..types import RawPost, Target
-from .platform import TargetMixin, NewMessage
+from .platform import NewMessage
 
-class NcmArtist(TargetMixin, NewMessage):
+class NcmArtist(NewMessage):
 
     categories = {}
     platform_name = 'ncm-artist'
@@ -15,6 +15,7 @@ class NcmArtist(TargetMixin, NewMessage):
     schedule_type = 'interval'
     schedule_kw = {'minutes': 1}
     name = "网易云-歌手"
+    has_target = True
 
     async def get_target_name(self, target: Target) -> Optional[str]:
         async with httpx.AsyncClient() as client:
diff --git a/src/plugins/nonebot_bison/platform/ncm_radio.py b/src/plugins/nonebot_bison/platform/ncm_radio.py
index 246cf05..6fae725 100644
--- a/src/plugins/nonebot_bison/platform/ncm_radio.py
+++ b/src/plugins/nonebot_bison/platform/ncm_radio.py
@@ -3,9 +3,9 @@ from typing import Any, Optional
 import httpx
 from ..post import Post
 from ..types import RawPost, Target
-from .platform import TargetMixin, NewMessage
+from .platform import NewMessage
 
-class NcmRadio(TargetMixin, NewMessage):
+class NcmRadio(NewMessage):
 
     categories = {}
     platform_name = 'ncm-radio'
@@ -15,6 +15,7 @@ class NcmRadio(TargetMixin, NewMessage):
     schedule_type = 'interval'
     schedule_kw = {'minutes': 10}
     name = "网易云-电台"
+    has_target = True
 
     async def get_target_name(self, target: Target) -> Optional[str]:
         async with httpx.AsyncClient() as client:
diff --git a/src/plugins/nonebot_bison/platform/platform.py b/src/plugins/nonebot_bison/platform/platform.py
index b8afa72..19dd5de 100644
--- a/src/plugins/nonebot_bison/platform/platform.py
+++ b/src/plugins/nonebot_bison/platform/platform.py
@@ -24,35 +24,55 @@ class RegistryMeta(type):
     def __init__(cls, name, bases, namespace, **kwargs):
         if kwargs.get('base'):
             # this is the base class
-            cls.registory = []
+            cls.registry = []
         elif not kwargs.get('abstract'):
             # this is the subclass
-            cls.registory.append(cls)
+            cls.registry.append(cls)
 
         super().__init__(name, bases, namespace, **kwargs)
 
 class RegistryABCMeta(RegistryMeta, ABC):
     ...
 
-class StorageMixinProto(metaclass=RegistryABCMeta, abstract=True):
+class Platform(metaclass=RegistryABCMeta, base=True):
     
+    schedule_type: Literal['date', 'interval', 'cron']
+    schedule_kw: dict
+    is_common: bool
+    enabled: bool
+    name: str
     has_target: bool
+    categories: dict[Category, str]
+    enable_tag: bool
+    store: dict[Target, Any]
+    platform_name: str
 
     @abstractmethod
-    def get_stored_data(self, target: Target) -> Any:
+    async def get_target_name(self, target: Target) -> Optional[str]:
         ...
 
     @abstractmethod
-    def set_stored_data(self, target: Target, data: Any):
+    async def fetch_new_post(self, target: Target, users: list[UserSubInfo]) -> list[tuple[User, list[Post]]]:
         ...
 
-class TargetMixin(StorageMixinProto, abstract=True):
+    @abstractmethod
+    async def parse(self, raw_post: RawPost) -> Post:
+        ...
 
-    has_target = True
+    async def do_parse(self, raw_post: RawPost) -> Post:
+        "actually function called"
+        return await self.parse(raw_post)
 
     def __init__(self):
         super().__init__()
-        self.store: dict[Target, Any] = dict()
+        self.reverse_category = {}
+        for key, val in self.categories.items():
+           self.reverse_category[val] = key
+        self.store = dict()
+
+    @abstractmethod
+    def get_tags(self, raw_post: RawPost) -> Optional[Collection[Tag]]:
+        "Return Tag list of given RawPost"
 
     def get_stored_data(self, target: Target) -> Any:
         return self.store.get(target)        
@@ -60,39 +80,43 @@ class TargetMixin(StorageMixinProto, abstract=True):
     def set_stored_data(self, target: Target, data: Any):
         self.store[target] = data
 
+    async def filter_user_custom(self, raw_post_list: list[RawPost], cats: list[Category], tags: list[Tag]) -> list[RawPost]:
+        res: list[RawPost] = []
+        for raw_post in raw_post_list:
+            if self.categories:
+                cat = self.get_category(raw_post)
+                if cats and cat not in cats:
+                    continue
+            if self.enable_tag and tags:
+                flag = False
+                post_tags = self.get_tags(raw_post)
+                for tag in post_tags or []:
+                    if tag in tags:
+                        flag = True
+                        break
+                if not flag:
+                    continue
+            res.append(raw_post)
+        return res
 
-class NoTargetMixin(StorageMixinProto, abstract=True):
-
-    has_target = False
-
-    def __init__(self):
-        super().__init__()
-        self.store = None
-
-    def get_stored_data(self, _: Target) -> Any:
-        return self.store
-
-    def set_stored_data(self, _: Target, data: Any):
-        self.store = data
-
-class PlatformNameMixin(metaclass=RegistryABCMeta, abstract=True):
-    platform_name: str
-    
-class CategoryMixin(metaclass=RegistryABCMeta, abstract=True):
+    async def dispatch_user_post(self, target: Target, new_posts: list[RawPost], users: list[UserSubInfo]) -> list[tuple[User, list[Post]]]:
+        res: list[tuple[User, list[Post]]] = []
+        for user, category_getter, tag_getter in users:
+            required_tags = tag_getter(target) if self.enable_tag else []
+            cats = category_getter(target)
+            user_raw_post = await self.filter_user_custom(new_posts, cats, required_tags)
+            user_post: list[Post] = []
+            for raw_post in user_raw_post:
+                user_post.append(await self.do_parse(raw_post))
+            res.append((user, user_post))
+        return res
 
     @abstractmethod
     def get_category(self, post: RawPost) -> Optional[Category]:
         "Return category of given Rawpost"
         raise NotImplementedError()
 
-class ParsePostMixin(metaclass=RegistryABCMeta, abstract=True):
-
-    @abstractmethod
-    async def parse(self, raw_post: RawPost) -> Post:
-        "parse RawPost into post"
-        ...
-
-class MessageProcessMixin(PlatformNameMixin, CategoryMixin, ParsePostMixin, abstract=True):
+class MessageProcess(Platform, abstract=True):
     "General message process fetch, parse, filter progress"
 
     def __init__(self):
@@ -104,7 +128,7 @@ class MessageProcessMixin(PlatformNameMixin, CategoryMixin, ParsePostMixin, abst
         "Get post id of given RawPost"
 
 
-    async def _parse_with_cache(self, raw_post: RawPost) -> Post:
+    async def do_parse(self, raw_post: RawPost) -> Post:
         post_id = self.get_id(raw_post)
         if post_id not in self.parse_cache:
             retry_times = 3
@@ -144,8 +168,8 @@ class MessageProcessMixin(PlatformNameMixin, CategoryMixin, ParsePostMixin, abst
             res.append(raw_post)
         return res
 
-class NewMessageProcessMixin(StorageMixinProto, MessageProcessMixin, abstract=True):
-    "General message process, fetch, parse, filter, and only returns the new Post"
+class NewMessage(MessageProcess, abstract=True):
+    "Fetch a list of messages, filter the new messages, dispatch it to different users"
 
     @dataclass
     class MessageStorage():
@@ -173,79 +197,6 @@ class NewMessageProcessMixin(StorageMixinProto, MessageProcessMixin, abstract=Tr
         self.set_stored_data(target, store)
         return res
 
-class UserCustomFilterMixin(CategoryMixin, ParsePostMixin, abstract=True):
-
-    categories: dict[Category, str]
-    enable_tag: bool
-
-    def __init__(self):
-        super().__init__()
-        self.reverse_category = {}
-        for key, val in self.categories.items():
-           self.reverse_category[val] = key
-
-    @abstractmethod
-    def get_tags(self, raw_post: RawPost) -> Optional[Collection[Tag]]:
-        "Return Tag list of given RawPost"
-
-    async def filter_user_custom(self, raw_post_list: list[RawPost], cats: list[Category], tags: list[Tag]) -> list[RawPost]:
-        res: list[RawPost] = []
-        for raw_post in raw_post_list:
-            if self.categories:
-                cat = self.get_category(raw_post)
-                if cats and cat not in cats:
-                    continue
-            if self.enable_tag and tags:
-                flag = False
-                post_tags = self.get_tags(raw_post)
-                for tag in post_tags or []:
-                    if tag in tags:
-                        flag = True
-                        break
-                if not flag:
-                    continue
-            res.append(raw_post)
-        return res
-
-    async def dispatch_user_post(self, target: Target, new_posts: list[RawPost], users: list[UserSubInfo]) -> list[tuple[User, list[Post]]]:
-        res: list[tuple[User, list[Post]]] = []
-        for user, category_getter, tag_getter in users:
-            required_tags = tag_getter(target) if self.enable_tag else []
-            cats = category_getter(target)
-            user_raw_post = await self.filter_user_custom(new_posts, cats, required_tags)
-            user_post: list[Post] = []
-            for raw_post in user_raw_post:
-                if isinstance(self, MessageProcessMixin):
-                    user_post.append(await self._parse_with_cache(raw_post))
-                else:
-                    user_post.append(await self.parse(raw_post))
-            res.append((user, user_post))
-        return res
-
-class Platform(PlatformNameMixin, UserCustomFilterMixin, base=True):
-    
-    # schedule_interval: int
-    schedule_type: Literal['date', 'interval', 'cron']
-    schedule_kw: dict
-    is_common: bool
-    enabled: bool
-    name: str
-
-    @abstractmethod
-    async def get_target_name(self, target: Target) -> Optional[str]:
-        ...
-
-    @abstractmethod
-    async def fetch_new_post(self, target: Target, users: list[UserSubInfo]) -> list[tuple[User, list[Post]]]:
-        ...
-
-class NewMessage(
-        Platform,
-        NewMessageProcessMixin,
-        UserCustomFilterMixin,
-        abstract=True
-        ):
-    "Fetch a list of messages, filter the new messages, dispatch it to different users"
     
     async def fetch_new_post(self, target: Target, users: list[UserSubInfo]) -> list[tuple[User, list[Post]]]:
         try:
@@ -266,12 +217,7 @@ class NewMessage(
             logger.warning("network connection error: {}, url: {}".format(type(err), err.request.url))
             return []
 
-class StatusChange(
-        Platform,
-        StorageMixinProto,
-        UserCustomFilterMixin,
-        abstract=True
-        ):
+class StatusChange(Platform, abstract=True):
     "Watch a status, and fire a post when status changes"
 
     @abstractmethod
@@ -305,13 +251,7 @@ class StatusChange(
             logger.warning("network connection error: {}, url: {}".format(type(err), err.request.url))
             return []
 
-class SimplePost(
-        Platform,
-        MessageProcessMixin,
-        UserCustomFilterMixin,
-        StorageMixinProto,
-        abstract=True
-        ):
+class SimplePost(MessageProcess, abstract=True):
     "Fetch a list of messages, dispatch it to different users"
 
     async def fetch_new_post(self, target: Target, users: list[UserSubInfo]) -> list[tuple[User, list[Post]]]:
@@ -332,20 +272,12 @@ class SimplePost(
             logger.warning("network connection error: {}, url: {}".format(type(err), err.request.url))
             return []
 
-class NoTargetGroup(
-        Platform,
-        NoTargetMixin,
-        UserCustomFilterMixin,
-        abstract=True
-        ):
+class NoTargetGroup(Platform, abstract=True):
     enable_tag = False
     DUMMY_STR = '_DUMMY'
     enabled = True
 
-    class PlatformProto(Platform, NoTargetMixin, UserCustomFilterMixin, abstract=True):
-        ...
-
-    def __init__(self, platform_list: list[PlatformProto]):
+    def __init__(self, platform_list: list[Platform]):
         self.platform_list = platform_list
         name = self.DUMMY_STR
         self.categories = {}
@@ -353,6 +285,8 @@ class NoTargetGroup(
         self.schedule_type = platform_list[0].schedule_type
         self.schedule_kw = platform_list[0].schedule_kw
         for platform in platform_list:
+            if platform.has_target:
+                raise RuntimeError('Platform {} should have no target'.format(platform.name))
             if name == self.DUMMY_STR:
                 name = platform.name
             elif name != platform.name:
@@ -381,3 +315,4 @@ class NoTargetGroup(
             for user, posts in platform_res:
                 res[user].extend(posts)
         return [[key, val] for key, val in res.items()]
+
diff --git a/src/plugins/nonebot_bison/platform/rss.py b/src/plugins/nonebot_bison/platform/rss.py
index 1874d87..4cc18cc 100644
--- a/src/plugins/nonebot_bison/platform/rss.py
+++ b/src/plugins/nonebot_bison/platform/rss.py
@@ -7,9 +7,9 @@ import httpx
 
 from ..post import Post
 from ..types import RawPost, Target
-from .platform import NewMessage, TargetMixin
+from .platform import NewMessage
 
-class Rss(NewMessage, TargetMixin):
+class Rss(NewMessage):
 
     categories = {}
     enable_tag = False
@@ -19,6 +19,7 @@ class Rss(NewMessage, TargetMixin):
     is_common = True
     schedule_type = 'interval'
     schedule_kw = {'seconds': 30}
+    has_target = True
 
     async def get_target_name(self, target: Target) -> Optional[str]:
         async with httpx.AsyncClient() as client:
diff --git a/src/plugins/nonebot_bison/platform/weibo.py b/src/plugins/nonebot_bison/platform/weibo.py
index e3a27c4..19d8703 100644
--- a/src/plugins/nonebot_bison/platform/weibo.py
+++ b/src/plugins/nonebot_bison/platform/weibo.py
@@ -9,9 +9,9 @@ from nonebot import logger
 
 from ..post import Post
 from ..types import *
-from .platform import NewMessage, TargetMixin
+from .platform import NewMessage
 
-class Weibo(NewMessage, TargetMixin):
+class Weibo(NewMessage):
 
     categories = {
             1: '转发',
@@ -26,6 +26,7 @@ class Weibo(NewMessage, TargetMixin):
     is_common = True
     schedule_type = 'interval'
     schedule_kw = {'seconds': 3}
+    has_target = True
 
     async def get_target_name(self, target: Target) -> Optional[str]:
         async with httpx.AsyncClient() as client:
diff --git a/tests/platforms/test_arknights.py b/tests/platforms/test_arknights.py
index d105ac4..1058019 100644
--- a/tests/platforms/test_arknights.py
+++ b/tests/platforms/test_arknights.py
@@ -2,7 +2,6 @@ import pytest
 import typing
 import respx
 from httpx import Response
-import feedparser
 
 if typing.TYPE_CHECKING:
     import sys
diff --git a/tests/platforms/test_platform.py b/tests/platforms/test_platform.py
index c8c661b..f708863 100644
--- a/tests/platforms/test_platform.py
+++ b/tests/platforms/test_platform.py
@@ -38,8 +38,7 @@ def user_info_factory(plugin_module: 'nonebot_bison', dummy_user):
 
 @pytest.fixture
 def mock_platform_without_cats_tags(plugin_module: 'nonebot_bison'):
-    class MockPlatform(plugin_module.platform.platform.NewMessage,
-            plugin_module.platform.platform.TargetMixin):
+    class MockPlatform(plugin_module.platform.platform.NewMessage):
 
         platform_name = 'mock_platform'
         name = 'Mock Platform'
@@ -48,6 +47,7 @@ def mock_platform_without_cats_tags(plugin_module: 'nonebot_bison'):
         schedule_interval = 10
         enable_tag = False
         categories = {}
+        has_target = True
 
         def __init__(self):
             self.sub_index = 0
@@ -77,8 +77,7 @@ def mock_platform_without_cats_tags(plugin_module: 'nonebot_bison'):
 
 @pytest.fixture
 def mock_platform(plugin_module: 'nonebot_bison'):
-    class MockPlatform(plugin_module.platform.platform.NewMessage,
-            plugin_module.platform.platform.TargetMixin):
+    class MockPlatform(plugin_module.platform.platform.NewMessage):
 
         platform_name = 'mock_platform'
         name = 'Mock Platform'
@@ -86,6 +85,7 @@ def mock_platform(plugin_module: 'nonebot_bison'):
         is_common = True
         schedule_interval = 10
         enable_tag = True
+        has_target = True
         categories = {
                 1: '转发',
                 2: '视频',
@@ -124,8 +124,7 @@ def mock_platform(plugin_module: 'nonebot_bison'):
 
 @pytest.fixture
 def mock_platform_no_target(plugin_module: 'nonebot_bison'):
-    class MockPlatform(plugin_module.platform.platform.NewMessage,
-            plugin_module.platform.platform.NoTargetMixin):
+    class MockPlatform(plugin_module.platform.platform.NewMessage):
 
         platform_name = 'mock_platform'
         name = 'Mock Platform'
@@ -134,6 +133,7 @@ def mock_platform_no_target(plugin_module: 'nonebot_bison'):
         schedule_type = 'interval'
         schedule_kw = {'seconds': 30}
         enable_tag = True
+        has_target = False
         categories = {
                 1: '转发',
                 2: '视频',
@@ -175,8 +175,7 @@ def mock_platform_no_target(plugin_module: 'nonebot_bison'):
 
 @pytest.fixture
 def mock_platform_no_target_2(plugin_module: 'nonebot_bison'):
-    class MockPlatform(plugin_module.platform.platform.NewMessage,
-            plugin_module.platform.platform.NoTargetMixin):
+    class MockPlatform(plugin_module.platform.platform.NewMessage):
 
         platform_name = 'mock_platform'
         name = 'Mock Platform'
@@ -185,6 +184,7 @@ def mock_platform_no_target_2(plugin_module: 'nonebot_bison'):
         schedule_kw = {'seconds': 30}
         is_common = True
         enable_tag = True
+        has_target = False
         categories = {
                 4: 'leixing4',
                 5: 'leixing5',
@@ -231,8 +231,7 @@ def mock_platform_no_target_2(plugin_module: 'nonebot_bison'):
 
 @pytest.fixture
 def mock_status_change(plugin_module: 'nonebot_bison'):
-    class MockPlatform(plugin_module.platform.platform.StatusChange,
-            plugin_module.platform.platform.NoTargetMixin):
+    class MockPlatform(plugin_module.platform.platform.StatusChange):
 
         platform_name = 'mock_platform'
         name = 'Mock Platform'
@@ -241,6 +240,7 @@ def mock_status_change(plugin_module: 'nonebot_bison'):
         enable_tag = False
         schedule_type = 'interval'
         schedule_kw = {'seconds': 10}
+        has_target = False
         categories = {
                 1: '转发',
                 2: '视频',