In order to investigate the control laws of the infrared radiation characteristics of the aircraft skin within 8 ~ 14 μ m-band, the physical and mathematical models for aerodynamic heating and the internal heat transfer were put forward. The infinite volume method was used for aircraft skin temperature distribution and reverse Monte Carlo method was used to calculate the infrared radiation characteristics emitted by aircraft skin. By calculating the infrared radiation intensity of aircraft-skin, the contribution of infrared radiation of aircraft components in a horizontal azimuth was analyzed. Finally, the control laws of the infrared radiation characteristics of the different aircraft components on skin temperature and emissivity were obtained.