Abstract: The paper analyzed the problem of penetration trajectories of multi reentry anti-ship missiles (RASMs) for cooperative saturation attack. Based on the analysis of reentry and applying constraints of RASM, the optimal method and software were chosen. Through trajectory simulation the multi optimal trajectories to the designated location were analyzed which was the fundamental of the saturation attack. An optimal tactic was proposed to solve the joint control with time and heading angle for the multi-constraints. The thinking is to simplify the complex optimal problem to the one with a constraint and a target according to the °ight trajectory of RASM. The simulation veri¯ed the e±ciency of optimal trajectories for multi missiles cooperative saturation attack and the ability of software applying o²ine and online.