diff --git a/Dockerfile b/Dockerfile
index 523a806..732eb9b 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -15,9 +15,9 @@ RUN apt-get update && \
     apt-get purge -y --auto-remove build-essential python3-dev
 # ref: https://github.com/docker-library/python/issues/60#issuecomment-134322383
 
-ENV DEFAULT_SETTINGS_FILE=/cfg/settings.toml
-ENV DEFAULT_LOG_DIR=/log
-ENV DEFAULT_OUT_DIR=/rec
+ENV BLREC_DEFAULT_SETTINGS_FILE=/cfg/settings.toml
+ENV BLREC_DEFAULT_LOG_DIR=/log
+ENV BLREC_DEFAULT_OUT_DIR=/rec
 ENV TZ="Asia/Shanghai"
 
 EXPOSE 2233
diff --git a/Dockerfile.mirrors b/Dockerfile.mirrors
index 6061080..195c4a1 100644
--- a/Dockerfile.mirrors
+++ b/Dockerfile.mirrors
@@ -17,9 +17,9 @@ RUN sed -i "s/deb.debian.org/mirrors.tuna.tsinghua.edu.cn/g" /etc/apt/sources.li
     apt-get purge -y --auto-remove build-essential python3-dev
 # ref: https://github.com/docker-library/python/issues/60#issuecomment-134322383
 
-ENV DEFAULT_SETTINGS_FILE=/cfg/settings.toml
-ENV DEFAULT_LOG_DIR=/log
-ENV DEFAULT_OUT_DIR=/rec
+ENV BLREC_DEFAULT_SETTINGS_FILE=/cfg/settings.toml
+ENV BLREC_DEFAULT_LOG_DIR=/log
+ENV BLREC_DEFAULT_OUT_DIR=/rec
 ENV TZ="Asia/Shanghai"
 
 EXPOSE 2233
diff --git a/README.md b/README.md
index c57ecb6..c610419 100644
--- a/README.md
+++ b/README.md
@@ -79,9 +79,9 @@
 
 ### 环境变量
 
-- 默认设置文件位置: `ENV DEFAULT_SETTINGS_FILE=/cfg/settings.toml`
-- 默认日志存放目录: `ENV DEFAULT_LOG_DIR=/log`
-- 默认录播存放目录: `ENV DEFAULT_OUT_DIR=/rec`
+- 默认设置文件位置: `ENV BLREC_DEFAULT_SETTINGS_FILE=/cfg/settings.toml`
+- 默认日志存放目录: `ENV BLREC_DEFAULT_LOG_DIR=/log`
+- 默认录播存放目录: `ENV BLREC_DEFAULT_OUT_DIR=/rec`
 - 默认时区: `ENV TZ="Asia/Shanghai"`
 
 ### 默认参数运行
@@ -164,18 +164,18 @@ api key 可以使用数字和字母，长度限制为最短 8 最长 80。
 
 作为 ASGI 应用运行，参数通过环境变量指定。
 
-- `config` 指定设置文件
-- `out_dir` 指定录播存放位置
-- `log_dir` 指定日志存放位置
-- `api_key` 指定 `api key`
+- `BLREC_CONFIG` 指定设置文件
+- `BLREC_OUT_DIR` 指定录播存放位置
+- `BLREC_LOG_DIR` 指定日志存放位置
+- `BLREC_API_KEY` 指定 `api key`
 
 ### bash
 
-    config=path/to/settings.toml out_dir=path/to/dir api_key=******** uvicorn blrec.web:app --host 0.0.0.0 --port 8000
+    BLREC_CONFIG=path/to/settings.toml BLREC_OUT_DIR=path/to/dir BLREC_API_KEY=******** uvicorn blrec.web:app --host 0.0.0.0 --port 8000
 
 ### cmd
 
-    set config=D:\\path\\to\\config.toml & set out_dir=D:\\path\\to\\dir & set api_key=******** uvicorn blrec.web:app --host 0.0.0.0 --port 8000
+    set BLREC_CONFIG=D:\\path\\to\\config.toml & set BLREC_OUT_DIR=D:\\path\\to\\dir & set BLREC_API_KEY=******** uvicorn blrec.web:app --host 0.0.0.0 --port 8000
 
 ## Webhook
 
diff --git a/src/blrec/bili/api.py b/src/blrec/bili/api.py
index 9b35535..a0fb977 100644
--- a/src/blrec/bili/api.py
+++ b/src/blrec/bili/api.py
@@ -18,7 +18,7 @@ __all__ = 'AppApi', 'WebApi'
 
 logger = logging.getLogger(__name__)
 
-TRACE_API_REQ = bool(os.environ.get('TRACE_API_REQ'))
+TRACE_API_REQ = bool(os.environ.get('BLREC_TRACE_API_REQ'))
 
 
 class BaseApi(ABC):
diff --git a/src/blrec/cli/main.py b/src/blrec/cli/main.py
index 8f40047..a043f92 100644
--- a/src/blrec/cli/main.py
+++ b/src/blrec/cli/main.py
@@ -54,13 +54,13 @@ def cli_main(
 ) -> None:
     """Bilibili live streaming recorder"""
     if config is not None:
-        os.environ['config'] = config
+        os.environ['BLREC_CONFIG'] = config
     if api_key is not None:
-        os.environ['api_key'] = api_key
+        os.environ['BLREC_API_KEY'] = api_key
     if out_dir is not None:
-        os.environ['out_dir'] = out_dir
+        os.environ['BLREC_OUT_DIR'] = out_dir
     if log_dir is not None:
-        os.environ['log_dir'] = log_dir
+        os.environ['BLREC_LOG_DIR'] = log_dir
 
     if root_path:
         if not root_path.startswith('/'):
diff --git a/src/blrec/disk_space/space_reclaimer.py b/src/blrec/disk_space/space_reclaimer.py
index e2bf6dd..9736c4d 100644
--- a/src/blrec/disk_space/space_reclaimer.py
+++ b/src/blrec/disk_space/space_reclaimer.py
@@ -36,7 +36,7 @@ class SpaceReclaimer(SpaceEventListener, SwitchableMixin):
         super().__init__()
         self._space_monitor = space_monitor
         self.path = path
-        if value := os.environ.get('REC_TTL'):
+        if value := os.environ.get('BLREC_REC_TTL'):
             try:
                 rec_ttl = int(value)
             except Exception as exc:
diff --git a/src/blrec/flv/operators/sort.py b/src/blrec/flv/operators/sort.py
index d4a8496..a0cc758 100644
--- a/src/blrec/flv/operators/sort.py
+++ b/src/blrec/flv/operators/sort.py
@@ -22,7 +22,7 @@ __all__ = ('sort',)
 
 logger = logging.getLogger(__name__)
 
-TRACE_OP_SORT = bool(os.environ.get('TRACE_OP_SORT'))
+TRACE_OP_SORT = bool(os.environ.get('BLREC_TRACE_OP_SORT'))
 
 
 def sort() -> Callable[[FLVStream], FLVStream]:
diff --git a/src/blrec/hls/operators/segment_remuxer.py b/src/blrec/hls/operators/segment_remuxer.py
index 65eaef3..56add94 100644
--- a/src/blrec/hls/operators/segment_remuxer.py
+++ b/src/blrec/hls/operators/segment_remuxer.py
@@ -18,8 +18,8 @@ __all__ = ('SegmentRemuxer',)
 
 logger = logging.getLogger(__name__)
 
-TRACE_REMUX_SEGMENT = bool(os.environ.get('TRACE_REMUX_SEGMENT'))
-TRACE_LIBAV = bool(os.environ.get('TRACE_LIBAV'))
+TRACE_REMUX_SEGMENT = bool(os.environ.get('BLREC_TRACE_REMUX_SEGMENT'))
+TRACE_LIBAV = bool(os.environ.get('BLREC_TRACE_LIBAV'))
 if TRACE_LIBAV:
     logging.getLogger('libav').setLevel(5)
 else:
diff --git a/src/blrec/setting/models.py b/src/blrec/setting/models.py
index bd7d4bc..86ce3a0 100644
--- a/src/blrec/setting/models.py
+++ b/src/blrec/setting/models.py
@@ -55,7 +55,7 @@ __all__ = (
     'PushdeerSettings',
     'PushplusSettings',
     'TelegramSettings',
-    'BarkSettings'
+    'BarkSettings',
     'NotifierSettings',
     'NotificationSettings',
     'EmailMessageTemplateSettings',
@@ -74,19 +74,25 @@ __all__ = (
 )
 
 
-DEFAULT_OUT_DIR: Final[str] = os.environ.get('DEFAULT_OUT_DIR', '.')
-DEFAULT_LOG_DIR: Final[str] = os.environ.get('DEFAULT_LOG_DIR', '~/.blrec/logs/')
+DEFAULT_OUT_DIR: Final[str] = os.environ.get('BLREC_DEFAULT_OUT_DIR', '.')
+DEFAULT_LOG_DIR: Final[str] = os.environ.get('BLREC_DEFAULT_LOG_DIR', '~/.blrec/logs/')
 DEFAULT_SETTINGS_FILE: Final[str] = os.environ.get(
-    'DEFAULT_SETTINGS_FILE', '~/.blrec/settings.toml'
+    'BLREC_DEFAULT_SETTINGS_FILE', '~/.blrec/settings.toml'
 )
 
 
 class EnvSettings(BaseSettings):
-    settings_file: Annotated[str, Field(env='config')] = DEFAULT_SETTINGS_FILE
-    out_dir: Optional[str] = None
-    log_dir: Optional[str] = None
+    settings_file: Annotated[str, Field(env='BLREC_CONFIG')] = DEFAULT_SETTINGS_FILE
+    out_dir: Annotated[Optional[str], Field(env='BLREC_OUT_DIR')] = None
+    log_dir: Annotated[Optional[str], Field(env='BLREC_LOG_DIR')] = None
     api_key: Annotated[
-        Optional[str], Field(min_length=8, max_length=80, regex=r'[a-zA-Z\d\-]{8,80}'),
+        Optional[str],
+        Field(
+            env='BLREC_API_KEY',
+            min_length=8,
+            max_length=80,
+            regex=r'[a-zA-Z\d\-]{8,80}',
+        ),
     ] = None
 
     class Config:
@@ -420,10 +426,13 @@ class TelegramSettings(BaseModel):
 
     @validator('server')
     def _validate_server(cls, value: str) -> str:
-        if value != '' and not re.fullmatch(r'^https?:\/\/[a-zA-Z0-9-_.]+(:[0-9]+)?', value):
+        if value != '' and not re.fullmatch(
+            r'^https?:\/\/[a-zA-Z0-9-_.]+(:[0-9]+)?', value
+        ):
             raise ValueError('server is invalid')
         return value
 
+
 class BarkSettings(BaseModel):
     server: str = ''
     pushkey: str = ''
@@ -600,10 +609,7 @@ class TelegramNotificationSettings(
 
 
 class BarkNotificationSettings(
-    BarkSettings,
-    NotifierSettings,
-    NotificationSettings,
-    BarkMessageTemplateSettings,
+    BarkSettings, NotifierSettings, NotificationSettings, BarkMessageTemplateSettings
 ):
     pass
 
diff --git a/src/blrec/utils/mixins.py b/src/blrec/utils/mixins.py
index 9a19714..d526724 100644
--- a/src/blrec/utils/mixins.py
+++ b/src/blrec/utils/mixins.py
@@ -146,7 +146,7 @@ class SupportDebugMixin(ABC):
         super().__init__()
 
     def _init_for_debug(self, room_id: int) -> None:
-        if (value := os.environ.get('DEBUG')) and (
+        if (value := os.environ.get('BLREC_DEBUG')) and (
             value == '*' or room_id in value.split(',')
         ):
             self._debug = True