The invention relates to a landslide analytical method. The landslide analytical method is accomplished through the first step that the landform is measured, and a section with a tower pole is marked; the second step that scanning is conducted on a satellite map of the section with the tower pole according to pixels, the section marked in the first step is loaded onto a Beisaier curve graph; the third step that new photos scanned after the second step are scanned again, the section district marked in the first step is loaded onto a second Beisaier curve graph generated in the second step, the elevations of the two lines are compared, and if large difference occurs between the elevations, the point can basically be determined to have the possibility of landslide. The landslide analytical method has the advantages that firstly, whether two geologic bodies are of one piece before is judged according to shapes of the images; secondly, combined with topographic data, the landslide point is judged by using the assistance of elevation differences; thirdly, interference zones including gullies, rivers, forest boundaries and the like can be kept away.