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.