Based on a lot of investigation data collected, The debris flow gully geological environmental conditions on Rurigong gully of Zaduo County Sa Huteng town, forming area, circulation area, accumulation area within the engineering geological and hydrogeological characteristics were discussed in detail, analyzes the Rurigong gully debris flow origin, type, size, activity characteristics, damage degree and trend of development, scientific calculating the discharge of debris flow, fifty years of severe, flow velocity, drop height, impact and bend superelevation of debris flow fluid mechanical characteristics value, comprehensive treatment plan put forward "to block drainage, both biological engineering for auxiliary", Provide an important basis for the debris flow disaster control for Debris flow of Rurigong gully of Zaduo County Sa Huteng town.