Abstract: Several common methods to simulate the problem of penetrating reinforced concrete were presented. Lagrange algorithm in AUTODYN was used to calculate the experiment of kinetic energy projectile penetrating reinforced concrete from the reference, the results were agreed well. With this method, the influence of reinforcement ratio, rebar schemes and impact position were analyzed. It is indicated, from the numerical results, increasing reinforcement ratio can enhance the anti-penetration property of reinforced concrete, especially in the case, where the diameter of projectile exceeds the distance of rebar. In addition, the influence of impact position is obvious.