The whole processes of Y1201 peroration bullet explode and collapse shaped charge liner, jet flow penetration was simulated in finite element software AUTODYN. The JWL model was used for explosive detonation material. The failure criterion for penetrated material was Von Mises criteria. The simulation gave the detail process of jet flow formation, velocity distribution of jet flow, the energy variation of shaped charge liner with time. The calculation showed: the penetration time was 13μs, and the speed after penetration was 3992 m/s, the kinetic energy of shaped charge liner varied with time, and reached the maximum 1.24?07J at t=15μs, then decreased to a stable value1.2?07J.