北京山区泥石流灾害较为频繁,总体以暴雨型沟谷泥石流为主,受地形、地貌、地质、降雨以及松散物类型等因素的影响比较明显。在调查分析北京山区泥石流灾害发育特征的基础上,从泥石流的形成和启动条件入手,对泥石流灾害的预警方法进行研究与探讨。 Debris flow in mountainous areas of Beijing is more frequent, and mainly takes the form of rainstorm-type gully debris flow. It is affected by such factors as topography, geomorphology, geology, rainfall and loose material types. Based on the investigation and analysis of the development characteristics of debris flow disaster in mountainous area of ​​Beijing, this paper starts with the formation and start-up conditions of debris flow, and studies and discusses the early warning methods of debris flow disaster.