Davis and JWL EOS were used to calculate the strong detonation and the spherical convergent detonation of PBX-9502 respectively. The results show that JWL EOS gives a pressure and velocity lower than the experimental data,while the calculated results by Davis EOS are in good agreement with the experimental data. Moreover,in the numerical simulation of spherical convergent detonation,the displacement with the interval of 1.5 μs of free surface of LiF flyer with Davis EOS is about 0.4 mm larger than that with JWL EOS.