diff --git a/rhj/backend/config.py b/rhj/backend/config.py
new file mode 100644
index 0000000..c249660
--- /dev/null
+++ b/rhj/backend/config.py
@@ -0,0 +1,23 @@
+import os
+from dotenv import load_dotenv
+
+load_dotenv()
+
+class Config:
+    SECRET_KEY = os.environ.get('SECRET_KEY') or 'a_default_secret_key'
+    SQLALCHEMY_DATABASE_URI = os.environ.get('DATABASE_URL') or 'sqlite:///site.db'
+    SQLALCHEMY_TRACK_MODIFICATIONS = False
+    SQLURL = os.getenv('SQLURL')
+    SQLPORT = os.getenv('SQLPORT')
+    SQLNAME = os.getenv('SQLNAME')
+    SQLUSER = os.getenv('SQLUSER')
+    SQLPWD = os.getenv('SQLPWD')
+    JWT_SECRET_KEY = os.environ.get('JWT_SECRET_KEY') or 'jwt-secret-string'
+    
+    # 邮件配置
+    MAIL_SERVER = os.environ.get('MAIL_SERVER') or 'smtp.qq.com'
+    MAIL_PORT = int(os.environ.get('MAIL_PORT') or 587)
+    MAIL_USE_TLS = os.environ.get('MAIL_USE_TLS', 'true').lower() in ['true', 'on', '1']
+    MAIL_USERNAME = os.environ.get('MAIL_USERNAME')
+    MAIL_PASSWORD = os.environ.get('MAIL_PASSWORD')
+    MAIL_DEFAULT_SENDER = os.environ.get('MAIL_DEFAULT_SENDER')
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