Because of the particular geological environmental setting,the geo-hazards frequently occurred in Daduhe River between Jiajun County and Detuo County,undercutting the safety of engineering activities in this area.The traditional field survey is limited in its short vision fields and inaccessible remote areas,while the interpretation based on remote sensing images could be used to obtain the distribution and scale of the hazards and then to solve the dilemma.Furthermore,the interpretation can be used in boundary delineation,categorization and characterization,identification of disaster genesis,scale and harmful degree,and development trend.Based on the Worldview(resolution:0.5m) remote sensing image of Daduhe River between Jiajun County and Detuo County,this paper processed the image systematically to rebuild orthophoto map and three-dimensional remote sensing image.Combined with field survey and geologic engineering comprehensive evaluation,the features and forming mechanism of large-scale landslide were studied.