Abstract: An arbitrary-site support-free launching mode is taken by some vehicular missile weapon system.Vibration damping requirements are necessary for both the launching and the transporter-launchers simultaneously.On the basis of response sensitivity analysis for the suspension parameters,nonlinear constraints and weighting multi-target functions are constructed and a multi-target optimization for the responses of some selected important points is completed.It is proved by simulation results that the purpose of multi-target optimization can be accomplished by the proposed method.