diff --git a/app/config.py b/app/config.py
index 472829c..07fa2a0 100644
--- a/app/config.py
+++ b/app/config.py
@@ -78,7 +78,17 @@ def _get_int_value(yaml_config: Optional[Dict[str, Any]], env_key: str, yaml_pat
 def _get_bool_value(yaml_config: Optional[Dict[str, Any]], env_key: str, yaml_path: List[str], default: bool) -> bool:
     """获取布尔配置值"""
     value = _get_config_value(yaml_config, env_key, yaml_path, str(default).lower())
-    return value.lower() == "true"
+    
+    # 如果值已经是布尔类型，直接返回
+    if isinstance(value, bool):
+        return value
+    
+    # 如果是字符串，转换为布尔值
+    if isinstance(value, str):
+        return value.lower() == "true"
+    
+    # 其他类型转换为布尔值
+    return bool(value)
 
 
 # 加载YAML配置