Abstract: Adopting slope radar automatic and real time monitoring techniques, the main slide mass deformation characteristics and the western lateral boundary were confirmed through displacement nephogram of southern slope in Fushun west open-pit mine. And, adopting sliding prediction techniques, the deformation law and deformation evolution stage of the main slip body slope in the process of treatment are studied in depth based on the surface displacement and speed curve. Informational construction technology ensured the safety and order of landslide preventive treatment.