Based on the discussion of both the characteristics of phase change micro -encapsulation (PCM) and the possibilities of applicaion on thermal infrared stealthy (TIS),the requirement of TIS for PCM, the condition and difficulties of application were pointed out, the thermal reflection/temperature adaptive infrared composite stealthy coating (TTC) was put forward for the first time.The design idea, structure, function and experimental data of the coating and the possibility of applicable to TIS were discussed...