Possibility of the infrared target’s camouflage depends upon(1)infrared radiationproperties of the target and the background (including transmittance media) ; (2)detection andrecognition abilities of the infrared system. The fundamental for infrared target’s camouflage is introduced. The infrared source (target and background)radiation simuation model and the designthought and overall plan of simulation software system of infrared target’s camouflage are discussed in this paper.