Abstract: ased on slope stability analysis of the embankment along National Highway No.108 k15+760~+980,the authors analyzed mechanisms of deformation and failure and its reinforcement treatment.By monitoring displacement of embankment and settlement of road surface,the authors characterized the patterns of the surface movement and the embankment settlement and their dynamics under unstable conditions,which would provide guidelines for control of embankment displacement during the construction and in turn assure slope stability.