diff --git a/backend/pyproject.toml b/backend/pyproject.toml
index 890f166b..56499b5a 100644
--- a/backend/pyproject.toml
+++ b/backend/pyproject.toml
@@ -1,7 +1,7 @@
 [tool.ruff]
 # Enable pycodestyle (`E`) and Pyflakes (`F`) codes by default.
 select = ["E", "F", "I"]
-ignore = ['E501']
+ignore = ['E501', 'F401']
 
 # Allow autofix for all enabled rules (when `--fix`) is provided.
 fixable = ["A", "B", "C", "D", "E", "F", "G", "I", "N", "Q", "S", "T", "W", "ANN", "ARG", "BLE", "COM", "DJ", "DTZ", "EM", "ERA", "EXE", "FBT", "ICN", "INP", "ISC", "NPY", "PD", "PGH", "PIE", "PL", "PT", "PTH", "PYI", "RET", "RSE", "RUF", "SIM", "SLF", "TCH", "TID", "TRY", "UP", "YTT"]
diff --git a/backend/src/module/api/download.py b/backend/src/module/api/download.py
index 64c0da1d..56a4c601 100644
--- a/backend/src/module/api/download.py
+++ b/backend/src/module/api/download.py
@@ -2,7 +2,7 @@ from fastapi import Depends, HTTPException, status
 
 from module.manager import SeasonCollector
 from module.models import BangumiData
-from module.models.api import *
+from module.models.api import RssLink
 from module.rss import analyser
 from module.security import get_current_user
 
diff --git a/backend/src/module/api/program.py b/backend/src/module/api/program.py
index 1b72035e..5e3cf6b5 100644
--- a/backend/src/module/api/program.py
+++ b/backend/src/module/api/program.py
@@ -61,7 +61,7 @@ async def stop(current_user=Depends(get_current_user)):
 
 
 @router.get("/api/v1/status", tags=["program"])
-async def status(current_user=Depends(get_current_user)):
+async def program_status(current_user=Depends(get_current_user)):
     if not current_user:
         raise HTTPException(
             status_code=status.HTTP_401_UNAUTHORIZED, detail="invalid token"
diff --git a/backend/src/module/checker/checker.py b/backend/src/module/checker/checker.py
index bb2ed808..ac3cb036 100644
--- a/backend/src/module/checker/checker.py
+++ b/backend/src/module/checker/checker.py
@@ -1,6 +1,5 @@
-import os.path
 
-from module.conf import DATA_PATH, settings
+from module.conf import settings
 from module.downloader import DownloadClient
 from module.network import RequestContent
 
diff --git a/backend/src/module/conf/config.py b/backend/src/module/conf/config.py
index 0532a511..051feeca 100644
--- a/backend/src/module/conf/config.py
+++ b/backend/src/module/conf/config.py
@@ -17,7 +17,7 @@ try:
         logger.info("Can't find version info, use DEV_VERSION instead")
         CONFIG_PATH = "config/config_dev.json"
     else:
-        CONFIG_PATH = f"config/config.json"
+        CONFIG_PATH = "config/config.json"
 except ImportError:
     logger.info("Can't find version info, use DEV_VERSION instead")
     VERSION = "DEV_VERSION"
@@ -38,7 +38,7 @@ class Settings(Config):
             config = json.load(f)
         config_obj = Config.parse_obj(config)
         self.__dict__.update(config_obj.__dict__)
-        logger.info(f"Config loaded")
+        logger.info("Config loaded")
 
     def save(self, config_dict: dict | None = None):
         if not config_dict:
@@ -75,7 +75,7 @@ class Settings(Config):
                         config_dict[key][attr_name] = self.__val_from_env(env, attr)
         config_obj = Config.parse_obj(config_dict)
         self.__dict__.update(config_obj.__dict__)
-        logger.info(f"Config loaded from env")
+        logger.info("Config loaded from env")
 
     @staticmethod
     def __val_from_env(env: str, attr: tuple):
diff --git a/backend/src/module/database/bangumi.py b/backend/src/module/database/bangumi.py
index e0e8c8be..3f8ad9fa 100644
--- a/backend/src/module/database/bangumi.py
+++ b/backend/src/module/database/bangumi.py
@@ -206,7 +206,7 @@ class BangumiDatabase(DataConnector):
     def not_complete(self) -> list[BangumiData]:
         # Find eps_complete = False
         condition = "eps_complete = 0"
-        data = self._search_datas(
+        self._search_datas(
             table_name=self.__table_name,
             condition=condition,
         )
diff --git a/backend/src/module/database/connector.py b/backend/src/module/database/connector.py
index a72d92e8..7cdfdad3 100644
--- a/backend/src/module/database/connector.py
+++ b/backend/src/module/database/connector.py
@@ -124,7 +124,7 @@ class DataConnector:
 
     def _table_exists(self, table_name: str) -> bool:
         self._cursor.execute(
-            f"SELECT name FROM sqlite_master WHERE type='table' AND name=?;",
+            "SELECT name FROM sqlite_master WHERE type='table' AND name=?;",
             (table_name,),
         )
         return len(self._cursor.fetchall()) == 1
diff --git a/backend/src/module/downloader/client/aria2_downloader.py b/backend/src/module/downloader/client/aria2_downloader.py
index 7e755f11..2aa1788a 100644
--- a/backend/src/module/downloader/client/aria2_downloader.py
+++ b/backend/src/module/downloader/client/aria2_downloader.py
@@ -4,7 +4,6 @@ import time
 from aria2p import API, Client, ClientException
 
 from module.conf import settings
-from module.downloader.exceptions import ConflictError
 
 logger = logging.getLogger(__name__)
 
diff --git a/backend/src/module/downloader/client/qb_downloader.py b/backend/src/module/downloader/client/qb_downloader.py
index 9dda692e..b18e2dcc 100644
--- a/backend/src/module/downloader/client/qb_downloader.py
+++ b/backend/src/module/downloader/client/qb_downloader.py
@@ -39,12 +39,12 @@ class QbDownloader:
                 time.sleep(5)
                 times += 1
             except Forbidden403Error:
-                logger.error(f"Login refused by qBittorrent Server")
-                logger.info(f"Please release the IP in qBittorrent Server")
+                logger.error("Login refused by qBittorrent Server")
+                logger.info("Please release the IP in qBittorrent Server")
                 break
             except APIConnectionError:
-                logger.error(f"Cannot connect to qBittorrent Server")
-                logger.info(f"Please check the IP and port in WebUI settings")
+                logger.error("Cannot connect to qBittorrent Server")
+                logger.info("Please check the IP and port in WebUI settings")
                 time.sleep(10)
                 times += 1
             except Exception as e:
diff --git a/backend/src/module/downloader/download_client.py b/backend/src/module/downloader/download_client.py
index 32db35d6..7d0a4b1d 100644
--- a/backend/src/module/downloader/download_client.py
+++ b/backend/src/module/downloader/download_client.py
@@ -62,7 +62,7 @@ class DownloadClient(TorrentPath):
         self.client.prefs_init(prefs=prefs)
         try:
             self.client.add_category("BangumiCollection")
-        except Exception as e:
+        except Exception:
             logger.debug("[Downloader] Cannot add new category, maybe already exists.")
         if settings.downloader.path == "":
             prefs = self.client.get_app_prefs()
@@ -109,7 +109,7 @@ class DownloadClient(TorrentPath):
 
     def delete_torrent(self, hashes):
         self.client.torrents_delete(hashes)
-        logger.info(f"[Downloader] Remove torrents.")
+        logger.info("[Downloader] Remove torrents.")
 
     def add_torrent(self, torrent: dict):
         if self.client.torrents_add(
diff --git a/backend/src/module/manager/collector.py b/backend/src/module/manager/collector.py
index 2ff955a0..30cd6a5f 100644
--- a/backend/src/module/manager/collector.py
+++ b/backend/src/module/manager/collector.py
@@ -1,7 +1,5 @@
 import logging
 
-from fastapi.responses import JSONResponse
-
 from module.database import BangumiDatabase
 from module.downloader import DownloadClient
 from module.models import BangumiData
diff --git a/backend/src/module/network/request_url.py b/backend/src/module/network/request_url.py
index 51730f66..cc876f97 100644
--- a/backend/src/module/network/request_url.py
+++ b/backend/src/module/network/request_url.py
@@ -64,7 +64,7 @@ class RequestURL:
             req = requests.head(url=url, headers=self.header, timeout=5)
             req.raise_for_status()
             return True
-        except requests.RequestException as e:
+        except requests.RequestException:
             logger.debug(f"[Network] Cannot connect to {url}.")
             return False
 
diff --git a/backend/src/module/notification/notification.py b/backend/src/module/notification/notification.py
index 72d93a5b..e2262909 100644
--- a/backend/src/module/notification/notification.py
+++ b/backend/src/module/notification/notification.py
@@ -4,7 +4,12 @@ from module.conf import settings
 from module.database import BangumiDatabase
 from module.models import Notification
 
-from .plugin import *
+from .plugin import (
+    BarkNotification,
+    ServerChanNotification,
+    TelegramNotification,
+    WecomNotification,
+)
 
 logger = logging.getLogger(__name__)
 
@@ -26,8 +31,7 @@ class PostNotification:
     def __init__(self):
         Notifier = getClient(settings.notification.type)
         self.notifier = Notifier(
-            token=settings.notification.token,
-            chat_id=settings.notification.chat_id
+            token=settings.notification.token, chat_id=settings.notification.chat_id
         )
 
     @staticmethod
@@ -37,11 +41,11 @@ class PostNotification:
         if poster_path:
             poster_link = "https://mikanani.me" + poster_path
             text = f"""
-            番剧名称：{notify.official_title}\n季度： 第{notify.season}季\n更新集数： 第{notify.episode}集\n{poster_link}\n
+            番剧名称：{notify.official_title}\n季度：第{notify.season}季\n更新集数：第{notify.episode}集\n{poster_link}\n
             """
         else:
             text = f"""
-            番剧名称：{notify.official_title}\n季度： 第{notify.season}季\n更新集数： 第{notify.episode}集\n
+            番剧名称：{notify.official_title}\n季度：第{notify.season}季\n更新集数：第{notify.episode}集\n
             """
         return text
 
@@ -61,6 +65,7 @@ class PostNotification:
     def __exit__(self, exc_type, exc_val, exc_tb):
         self.notifier.__exit__(exc_type, exc_val, exc_tb)
 
+
 if __name__ == "__main__":
     info = Notification(
         official_title="魔法纪录 魔法少女小圆外传",
diff --git a/backend/src/module/rss/poller.py b/backend/src/module/rss/poller.py
index 9893d3be..00fa9c63 100644
--- a/backend/src/module/rss/poller.py
+++ b/backend/src/module/rss/poller.py
@@ -1,6 +1,5 @@
 import re
 
-from module.conf import settings
 from module.database import RSSDatabase
 from module.models import BangumiData, RSSTorrents
 from module.network import RequestContent, TorrentInfo
@@ -25,4 +24,4 @@ class RSSPoller(RSSDatabase):
         rss_datas: list[RSSTorrents] = self.get_rss_data()
         with RequestContent() as req:
             for rss_data in rss_datas:
-                torrents = self.polling(rss_data.url, req)
+                self.polling(rss_data.url, req)
diff --git a/backend/src/module/utils/bangumi_data.py b/backend/src/module/utils/bangumi_data.py
index aeda2a3d..eea436a3 100644
--- a/backend/src/module/utils/bangumi_data.py
+++ b/backend/src/module/utils/bangumi_data.py
@@ -1,5 +1,3 @@
 import logging
 
-from .json_config import load, save
-
 logger = logging.getLogger(__name__)