Constructing a qualitative model for discrete rods warhead, the kinematics analysis and dynamics analysis of the rods are completed. On the basis of the qualitative model of discrete rods, a simulation case is provided. The qualitative simulation result shows that hexagon cross section shape of rod will receive the lowest air drag while by means of better preplaced dip angle, controlling the rotation velocity of the rod and keeping every rod with identical dip angle to the axis of warhead will make the rod get a lateral direction velocity so as to have the rod gain identical casting initial velocity in its length direction. Simulation experiment shows that when dip angle of preplaced discrete rod is 6°, the damage cycle reaches the optimal value.