Hyperthermy and slushing stealth coatings are applied to depth charge launcher which have the characteristics of high temperature resistance,corrosion resistance and high stealth performance when the depth charge is launched. The technical difficulty of improving the stealth effect of traditional rocket depth charge is to effectively enchance the depth charge launcher’s stealth performance in conditions of high-temperature plume. Aiming at this difficulty,one sort of wave-absorbing composite material has been proposed. The theoretical study and simulation theoretical model results of this method show that the wave-absorbing composite materials could meet the depth charge launcher’s requirements of stealth performance indicators.