To　study　the　dynamic　response　of　bedding　slope　rock　under　blasting　load,　numerical　simulation　method　is　used　to　analyze　the　propagation　law　of　velocity　and　stress　field　of　the　slope.　Goodman　unit　is　used　to　simulate　the　relative　slip　of　rock　masses　on　both　sides　of　the　structural　plane.　The　results　show　that　the　change　of　the　slope　shape　at　the　step　of　the　slope　will　cause　the　vibration　velocity　and　stress　value　of　the　particle　to　fluctuate　significantly,　and　the　＇whiplash　effect＇　of　the　protruding　part　of　the　slope　step　is　obvious,　but　the　vibration　velocity　and　stress　do　not　reach　the　peak　at　the　same　part　of　the　slope.　Therefore,　it　is　unreasonable　to　use　the　peak　vibration　velocity　or　stress　value　as　the　single　index　to　evaluate　the　stability　of　the　slope.　The　dynamic　response　of　the　internal　mass　of　the　rock　mass　is　mainly　related　to　the　factors　such　as　medium　damping,　structural　plane　and　slope　shape.　The　existence　of　the　internal　structural　plane　will　cause　the　reflection　of　the　explosion　stress　wave　to　be　superimposed,　and　the　vibration　velocity　and　stress　value　of　the　particle　point　will　also　be　enlarged　to　some　extent　before　the　structural　surface.　The　reflection　superposition　effect　of　stress　wave　on　the　free　surface　should　not　be　ignored　©　2018,　Editorial　Department　of　Transaction　of　Beijing　Institute　of　Technology.　All　right　reserved.