A method is proposed to evaluate the laser irradiation accuracy of helicopter optoelectronic systems by using a shortwave infrared camera to monitor the laser irradiation spot and calculate the irradiation accuracy. Infrared detector with appropriate pixel size, band and sensitivity, lens with appropriate focal length and field angle, 3m ×3m cross target and camera set up the test environment to realize the laser spot camera monitoring and data recording of the airborne photoelectric system. According to the laser spot monitoring video image captured by the monitoring equipment, the laser irradiation accuracy of the airborne photoelectric system is calculated by using the data processing method, and is applied in the flight test, which is feasible.