diff --git a/application/config/config.yaml b/application/config/config.yaml
index 483103214f3885677c598db86a2aed59352aed24..6c967a5113478872a2febecb2def82991e64ffd0 100644
--- a/application/config/config.yaml
+++ b/application/config/config.yaml
@@ -2,8 +2,8 @@ System:
   Env: public
 
 MySQL:
-  USER: root
-  PASSWORD: localhost123
-  HOST: localhost
-  PORT: 3306
+  User: root
+  Password: localhost123
+  Host: localhost
+  Port: 3306
   DB: elp
diff --git a/application/lib/flask_loguru/format.py b/application/lib/flask_loguru/format.py
index ca5fe95d59eedb9482d6d589b29956b1eb1907dc..a24227c2b1b82a009c4d8715bf2cc8887fa6252a 100644
--- a/application/lib/flask_loguru/format.py
+++ b/application/lib/flask_loguru/format.py
@@ -14,6 +14,7 @@ import json
 
 
 def serialize(record: dict) -> str:
+    """Customize logger format"""
     time_stamp = record["time"]
     time_stamp = time_stamp.strftime("%Y-%m-%d %H:%M:%S")
     subset = {
@@ -27,5 +28,6 @@ def serialize(record: dict) -> str:
 
 
 def patching(record: dict) -> str:
+    """Set the patch"""
     record["extra"]["serialized"] = serialize(record)
     return "{extra[serialized]}\n"
diff --git a/application/lib/flask_loguru/logger.py b/application/lib/flask_loguru/logger.py
index 6b015d54d3ce4befad7bfeb36dcdd6c5eab87108..fd7ff8b272fccf4831c889fce6b5ca6c2df7300f 100644
--- a/application/lib/flask_loguru/logger.py
+++ b/application/lib/flask_loguru/logger.py
@@ -10,6 +10,7 @@
 # @Description :
 """
 
+import os
 import sys
 
 from flask import Flask, request, g
@@ -23,14 +24,18 @@ class FlaskLoguru:
         if app is not None:
             self.init_app(app)
 
-    def init_app(self, app: Flask):
+    def init_app(self, app: Flask) -> None:
+        """Initialize the app"""
         logger.remove()
-        logger.add(sys.stderr, format=patching)
-        if not hasattr(app, "extensions"):
+        # 获取日志级别
+        level = app.config.Logger.Level if app.config.get('Logger') is not None else 'DEBUG'
+        logger.add(sys.stderr, level=level, format=patching)
+        # 注册扩展
+        if not hasattr(app, 'extensions'):
             app.extensions = {}
 
-        app.extensions.setdefault("loguru", {})
-        app.extensions["loguru"][self] = logger
+        app.extensions.setdefault('loguru', {})
+        app.extensions['loguru'][self] = logger
 
         @app.before_request
         def before_request():
diff --git a/application/utils/dsn/dsn.py b/application/utils/dsn/dsn.py
index 0f7b544ca5ffba9322928c9b9f0997b614dff25b..87937cfbde0865080e894f5ef14652ae84ae984f 100644
--- a/application/utils/dsn/dsn.py
+++ b/application/utils/dsn/dsn.py
@@ -23,5 +23,5 @@ def dsn(app: Flask) -> str:
     mysql_cfg = app.config.get('MySQL')
     if mysql_cfg is None:
         raise KeyError('Key MySQL error')
-    return (f'mysql+pymysql://{app.config.MySQL.USER}:'
-            f'{app.config.MySQL.PASSWORD}@{app.config.MySQL.HOST}:{app.config.MySQL.PORT}/{app.config.MySQL.DB}')
+    return (f'mysql+pymysql://{app.config.MySQL.User}:'
+            f'{app.config.MySQL.Password}@{app.config.MySQL.Host}:{app.config.MySQL.Port}/{app.config.MySQL.DB}')