This paper took the Wenjiaba landslide of Pingwu County as the research object,3 factors of the landslide formative conditions were analyzed: geological,geomorphic and hydrological conditions.Based on the theories of remote-sense geology and with the support of geological information,topographical maps,GPS data,and conducted a field survey,the interpretation keys were established.By interpreting the SPOT 5 images,the landslide boundary and landslide factors information were extracted,the volume was estimate...