Abstract: In order to study the dynamic response of rock slope under blasting load,this paper took the slope of Qidashan iron mine as the research object,and established a three-dimensional anti-dipping rock slope physical model.The acceleration and velocity sensors were used to collect the acceleration and velocity distribution of each part of the slope,and the dynamic amplification effect of the rock mass points of the slope under different amplitudes was analyzed.The research results show that the slope model has a tendency to magnify effect and elevation magnification effect on blasting acceleration and velocity,and the acceleration and velocity magnification effect is more obvious in the case of low amplitude.