diff --git a/config_manager.py b/config_manager.py
index 4dbc381..4479c80 100644
--- a/config_manager.py
+++ b/config_manager.py
@@ -47,12 +47,16 @@ class ConfigManager:
                 'level': 'INFO',
                 'store': True,
                 'path': 'logs'
+            },
+            'llm': {
+                'api_key': '',  # 需要用户填写
+                'api_base': 'https://api.openai.com/v1',  # API基础URL
+                'model': 'gpt-3.5-turbo',  # 默认模型
+                'temperature': 0.7, # 温度参数
             }
         }
-
         # 确保目录存在
         os.makedirs(os.path.dirname(config_path) or '.', exist_ok=True)
-
         # 写入默认配置
         with open(config_path, 'w', encoding='utf-8') as f:
             yaml.dump(default_config, f, default_flow_style=False, allow_unicode=True)
diff --git a/database_manager.py b/database_manager.py
index 01808d5..c86b65c 100644
--- a/database_manager.py
+++ b/database_manager.py
@@ -3,6 +3,10 @@ import traceback
 
 import pandas as pd
 from sqlalchemy import create_engine, text, inspect
+from logger_manager import get_logger
+
+# 获取日志器
+logger = get_logger()
 
 from config_manager import get_config_manager
 from logger_manager import get_logger
@@ -58,6 +62,7 @@ class DatabaseManager:
         if conditions:
             query += f" WHERE {conditions}"
         try:
+            logger.debug(f"执行查询: {query}")
             return pd.read_sql(query, engine)
         except Exception as e:
             self.logger.error(f"从数据库加载数据时出错: {e}")
diff --git a/llm_manager.py b/llm_manager.py
new file mode 100644
index 0000000..698dbdc
--- /dev/null
+++ b/llm_manager.py
@@ -0,0 +1,93 @@
+import os
+import yaml
+import requests
+from typing import Dict, Any, Optional
+
+
+class LLMManager:
+    """LLM管理器，负责加载API配置并提供与LLM交互的功能"""
+
+    _instance = None  # 单例实例
+
+    def __init__(self):
+        self._api_key = None
+        self._api_base = None
+        self._model = None
+        self._temperature = None
+
+    def __new__(cls):
+        """实现单例模式"""
+        if cls._instance is None:
+            cls._instance = super(LLMManager, cls).__new__(cls)
+            cls._instance._config = None
+            cls._instance._api_key = None
+            cls._instance._api_base = None
+            cls._instance._model = None
+            cls._instance._provider = None
+        return cls._instance
+
+    def initialize(self):
+        """初始化LLM配置"""
+        from config_manager import get_config_manager
+
+        config_manager = get_config_manager()
+        llm_config = config_manager.get('llm', {})
+
+        # 加载LLM配置
+        self._api_key = llm_config.get('api_key', '')
+        self._api_base = llm_config.get('api_base', 'https://api.openai.com/v1')
+        self._model = llm_config.get('model', 'gpt-3.5-turbo')
+        self._temperature = llm_config.get('temperature', 0.7)
+
+        if not self._api_key:
+            print("警告: LLM API密钥未配置，请在config.yaml中设置。")
+
+    def chat(self, content: str, prompt: Optional[str] = None) -> str:
+        """
+        与LLM进行对话
+
+        Args:
+            content: 用户输入内容
+            prompt: 可选的系统提示词
+
+        Returns:
+            LLM的回复内容
+        """
+        if self._config is None:
+            self.initialize()
+
+        headers = {
+            "Authorization": f"Bearer {self._api_key}",
+            "Content-Type": "application/json"
+        }
+
+        messages = []
+        # 添加系统提示(如果有)
+        if prompt:
+            messages.append({"role": "system", "content": prompt})
+
+        # 添加用户消息
+        messages.append({"role": "user", "content": content})
+
+        payload = {
+            "model": self._model,
+            "messages": messages,
+            "temperature": self._temperature,
+        }
+
+        response = requests.post(
+            f"{self._api_base}/chat/completions",
+            headers=headers,
+            json=payload
+        )
+
+        if response.status_code != 200:
+            raise Exception(f"API请求失败: {response.text}")
+
+        return response.json()["choices"][0]["message"]["content"]
+
+
+# 提供简单的访问函数
+def get_llm_manager() -> LLMManager:
+    """获取LLM管理器实例"""
+    return LLMManager()
\ No newline at end of file