Abstract:Taking 42 debris flows along the main stream of Minjiang Riverand Yuzixi catchment in strong earthquake area of Wenchuan as research objects, seven specific characteristics, such asstorage capacity of material sources, occurrencefrequency, catchment area etc., are selected for the evaluation of debris flow scale. Critic method is adopted to set up the identification model of rainfall induced debris flow for power grid. And the identification results are divided into three levels: high, medium and low prone areas of debris flow are 15 catchment basins, 11 catchment basins and 16 catchment basins respectively. Then the once outflow volume of 26 debris flows in the study area isselected to verify the feasibility of the proposed identification model of rainfall induced debris flow for power grid. Finally, the zone map where debris flows are prone to occurrence are generated through ArcGIS platform.