The Ground Optical Transceiver System is designed for satellite-to-ground and ground-to-satellite optical links. It features high dynamic acquisition & tracking capabilities, high-speed data transmission performance, a large-angle two-dimensional tracking field of view, and compatibility with modular optical antennas. Its parameters meet the required standards, including a satellite-ground distance of 500–1300 km and a transmit power (optical amplifier output) of no less than 10 W, and it also has the characteristics of adapting to satellite-ground links in different orbits, independently adjustable divergence angle, and high tracking accuracy. Satellite-ground laser communication, on the other hand, can solve the bottleneck of satellite-ground communication rate, significantly improve communication security, and meet the urgent demand for fast and lossless downlink of massive service data such as remote sensing and communication. Together, the two provide terminal support and technical guarantee for the field of satellite-ground laser communication, facilitating the efficient development of related businesses.