In order to enhance damage effectiveness of the circumferential Multiple Linear Explosively Formed Penetrator (MLEFP) charge, the influence of the liner curvature radius on the formation of circumferential MLEFP was studied through ANSYS/LS-DYNA. By statistic analysis of the formed assembly Linear Explosively Formed Penetrator (LEFP), the regulation of the liner curvature radius influence to the formation of circumferential MLEFP and the appropriate relatives among parameters were found. Result shows that the circumferential MLEFP warhead can form the linear explosive shaped projectile with a certain speed on four directions to realize circumferential damage and has a certain effect on dealing with armored vehicle and missile under explosive loading. While the ratio of the liner curvature radius and caliber from 0.6 to 0.8, the speed of LEFP formed by the circumferential MLEFP warhead is higher, and the entire kinetic energy is larger, the assembly damage effectiveness is better.