The definition and classification of the infrared radiation sources of aircraft target are introduced. Based on the requirements of engineering calculation, the physical models of infrared radiation are summarized for aircraft skin, engine nozzle and tail flame, respectively. The development statues of the spectral radiation characteristics of aircraft target are systematically investigated at home and abroad, and the spectral radiation characteristics are summarized at different wavelengths and detection angles. Combined with the guidance systems of infrared guided missiles, the matching operational applications of point-type infrared decoy including single point decoy, multi-point decoy, spectral decoy and surface-type decoy are evaluated. This study provides a good guidance for establishing reasonable and effective jamming strategies, which further enhances the survivability of aircraft on battlefield.