Abstract: In light of the engineering geological condistion，shape，stability and measurement target for Changba open-pit slope，a dynamic comprehensive deformation monitoring scheme based mainly on GPS technology was proposed.596 d first stage of deformation monitoring was made during Dec.3 2001 and Aug.13，2003; and in light of the potential slip body of 1500m bench at north wall disclosed in the first stage monitoring，210 d second stage deformation comprehensive monitoring was carried out during May 1,2006 and Nov.30，2006.Through the deformation monitoring and in combination with theorectical analysis and numerical simulation，the stability of the east wall was forecasted，laying a foundation for the mine safety production.

Key words: Mine slop, Dynamic comprehensive monitoring, Stablity forecast