Abstract: In order to quickly obtain the position of the subreflector changing with the elevation angle of the antenna, and to improve the comprehensive performance of the antenna by adjusting the position of the subreflector, a virtual binocular vision measuring method is proposed. The position of the subreflector of the antenna is simulated by the virtual binocular vision system composed of high-speed camera and plane mirror, and the position change image of the measured object moving with the space of the experimental platform is obtained.The image preprocessing, denoising, edge detection, feature point extraction and other operations are carried out to reconstruct the movement of the measured object in the three-dimensional direction with the movement of the experimental platform, and the reconstruction results have errors of less than 1% in the three directions. The results show that this method has high measurement accuracy and can better reconstruct the position of the subreflector.