Three-beam rod controlled_motion warhead was researched in this paper, which has different structure of discrete rods stagger arrangement or trans arrangement. The whole dispersal process of these rods simulated by ANSYS/LS-DYNA. The result indicate that the gap between the rods in each layers with stagger arrangement structure can be mutually complementary. At the same time the phenomena that the discrete rods spin in the opposite direction with trans arrangement structure proved. This way can shorten the time forming killing hoop. So such technology can help to control the formation time of each rod ring to achieve different spatial distribution of multiple killing hoop.