Debris flow is one of the most common geologic disasters in the southwest area of China, due to its tectonic structure position and unique topographic characteristics. Bengtuao debris flow, with strong mobility, is located in the diamond land block of Sichuan and Yunnan Provinces where is near the east fracture branch of the Anning River. Based on internal causes like topography, stratum lithological characters and neo-tectonic activity and external causes like rainstorm, characteristic indexes of the debris flow are obtained quantitatively in accordance with analyses of occurrence degree, activity patterns and hazarding ways, so that the definite controlling targets and project management program are put forward in detail. Most of debris flow disasters in this area occur on the same or similar geological background, especially the widely distributed Xigeda formation clay in the Anning River Basin, which are the main material source composition of debris flow and the governing factor and controlling object.