Abstract:Average single shaft resistance to pressure can be known by Single axis compression deformation experiment of four kind rocks, which is ready for dynamics experiment. According to average single shaft resistance to pressure, we can choose three levels of Axis pressure to impact rock sample with circle impacts. With the data and experiment phenomenon, it revealed the energy transfer change rule during the circle impact and analysis by two facts. One is failure and the other one is the change of elastic modulus. By analysis of rock failure mode，we can get different types of rock and failure mode, and the conclusion can be used as a theoretical basis for on-site construction practice .