The advantages of infrared measurement technology and its main application in experiment flight mission are introduced. The operation principle of the infrared imaging system is introduced briefly. The temperature and spectral characteristics of the infrared radiation of the aircraft are analyzed. Based on the infrared radiation characteristics of the aircraft, the measuring band of the infrared measurement in experiment flight tasks is proposed. Through theoretical calculation, the technology characteristics such as operation distance and measurement precision of the infrared measurement system are analyzed and estimated. Combining with working practice, the application problem of infrared measurement technology in experiment flight is proposed.