Taking　the　bedding　slope　of　the　Shuangda　road　in　Beijing　for　example,　this　paper　makes　a　systematic　investigation　and　the　deformation　monitoring　of　the　engineering　geological　conditions,　the　deformation　characteristics　of　the　slope.　On　this　basis,　by　discrete　element　(UDEC)　numerical　simulation　and　by　analysing　the　engineering　geological　conditions,　this　paper　discusses　the　deformation　characteristics.　The　result　of　monitoring　shows　that　when　the　slope　is　in　the　later　section　of　slip　curve,　the　rocks　on　the　top　and　surface　of　the　deformation　shape　will　appear　slippage　crack　deformation　along　the　surface,　and　the　fragmentation　rocks　nearby　the　first-class　slope　bring　large　deformation　under　the　thrust　of　bending　of　stratified　rock,　and　form　the　shear　sliding　surface.　After　sliding　surface　in　the　bending　rocks　connect　the　shear　sliding　surface　in　fragmentation　rocks,　the　slope　appear　overall　instability.　The　state　of　slope　under　supporting　is　simulated　by　discrete　element　(UDEC),　and　the　treated　slope　is　analyzed　by　means　of　monitoring,　by　using　retaining　walls　and　anchor　supports,　the　slope　reach　the　stability　requirements.