Abstract: With the open-source molecular dynamics program LAMMPS, the hypervelocity impact model for a spherical aluminum projectile impacting an aluminum target is established, and the impact process of the projectile to single plate, double plates and semi-infinite thick plate at a speed of 10 km/s is simulated. The physical process of impact and the damage characteristics of the target are similar to those observed in the macroscopic impact. The size of the crater in the semi-infinite thick plate is basically identical with the value deduced from the macro empirical formula. The simulation results preliminarily show that the molecular dynamics method is capable of simulating the hypervelocity impact of projectile to thin targets and semi-infinite targets, and that it provides a new approach for investigating the microcosmic mechanism involved in the hypervelocity impact.