In order to improve damaging ability of warhead, two different shapes of fragments with the same volume in a warhead were compared. The warhead was simulated and analyzed by ANSYS/LS-DYNA on scattering characteristics. The effects of alternate permutation and different shapes of fragment on velocity of the fragments formed by warhead explosion and fragment spatiality were analyzed. Simulation shows that average speed of arc-shaped lever is the fastest and the spherical-debris is the lowest; The scattering fragment at any moment can be preformed as a composite "volume" damage that consist of the "volume" damage by premade spherical fragment and premade arc rod fragment with central angle of 30°. The result of numerical simulation can provide a useful reference for design of discrete rod combined warhead.