Abstract: In order to study damage rule of shaped charge hitting to composite armor, the numerical simulation finite element models of shaped charge hitting to composite armor were built with the nonlinear dynamics software of Autodyn. It analyzed the influence of collision point and structure parameters on damage effect according to numerous simulation results. Taking jet residual velocity and penetration hole as assessment parameters, damage rule of shaped charge hitting to composite armor were obtained. When the tank is attacked at the front side, composite armor being penetrated and damaged will vary with penetration order of all the armor plates. Range of the available liner angle of the shaped charge to attack the composite armor is from 45 degree to 60 degree. Research results are significant to implementing armored vehicles battle damage assessment and repair.