An airborne infrared measurement system based on thermal imager is designed in this paper.The system is mainly used for loading on the air platform to track and measure the infrared characteristics of the target in the air,and to acquire the image data of the omnidirectional infrared and visible characteristics of the target at high elevation.Modular design is adopted in the system structure design.It has small weight,small size,strong seismic resistance,and can meet the requirements of hanging flight.It can track and measure the infrared and visible characteristics of sea targets steadily.The system adopts passive isolation plus active gyro stabilization control technology,non-thermal compensation of optical lens and precision calibration technology in the interior field.It has strong environmental adaptability,long working distance,high measurement accuracy,and the overall technology and performance are in the leading level in China.