There　are　responses　of　slope　under　long-term　cyclic　load,　and　the　degradation　of　mechanical　capability　of　slope　soils　causes　the　slope　to　become　unstable　and　trigger　the　movement.　The　dynamic　responses　of　a　highway　slope　under　cyclic　load　are　presented　by　a　finite　element　numerical　simulation　method.　The　results　show　that　the　displacement,　velocity　and　acceleration　of　the　monitoring　point　on　slope　increase　linearly　with　the　increase　of　the　maximum　amplitude　of　cyclic　load　with　a　constant　vibration　frequency.　However,　the　maximum　response　values　of　the　slope　under　the　cyclic　load　with　a　constant　vibration　amplitude　are　not　proportional　to　the　frequency,　and　there　is　a　strong　response　in　the　frequency　band　of　4-5　Hz,　approaching　to　predominant　frequency　of　the　slope.　It　is　possible　for　the　slope　system　under　the　frequency　band　of　cyclic　load　to　arise　a　disadvantageous　resonance　for　the　stability　of　the　slope.　It　is　of　theoretical　and　practical　significance　to　evaluate　the　long-term　stability　and　durability　of　the　highway　slopes　under　dynamic　load.