The chief aim of this research is to investigate the damage effects of ceramic fragment on explosive effect and control detonation energy, based on mixed change experiment for ceramic fragment and TNT, the LS-DYNA program was adapted to simulation for a new warhead model of action and the process of fragments velocity was analyzed on explosive effect. The results show that the fragments meet the intensity and the method can control detonation energy effectively, it is demonstrated that the numerical results are well corresponding to experimental data, it can offer a new model of action for disabled warhead.