Abstract: The formation condition and characteristics of the 7.24 debris flow in Shishu gully were analyzed with a view to offering instructions. The results showed that the favorable topographic condition, the rich source and the sufficient rainfall comprised the formation condition of Shishu gully. The abundant prophase rainfall and short duration rainfall intensity were the inducing factors of the debris flow. The 7.24 debris flow is the type of gully bed starting which has a strong carrying capacity. Lack of consciousness of disaster prevention increased losses when the 7.24 debris flow occurred. The debris flow disasters include three main forms of destroying houses and farmland, and breaking down the road.