The invention provides a wireless optical antenna automatic tracking system, wherein the light-receiving path of the system and the light-emitting path of the system are coaxial. A pitching reflector and an azimuth reflector are installed in the middle of a light path at the back of a primary mirror and a lens group, wherein the mirror surfaces of the two reflectors are mutually vertical. The reflectors are respectively arranged at the shaft ends of a pitching motor and an azimuth motor. The two motors are voice coil motors. The two reflectors are completely reflecting mirrors. A reception light beam, which passes through the primary mirror and the lens group, is changed in light path to reach a beam splitter through the two reflectors. The beam splitter divides the above light beam into two light beams, wherein one light beam enters the light-receiving and light-emitting path of the system to be coupled to the optical fiber for realizing the communication, and the other light beam enters a detection light path of the system to be coupled to a light detector. A central controller calculates the position error of a light spot according to the light spot information of the light detector, and the above two motors are controlled by a motor driving circuit to rotate. The incident light is smoothly coupled into the receiving optical fiber through adjusting the reflectors. According to the technical scheme of the invention, the normal communication of the wireless light is ensured when the system is installed in a swinging environment. Meanwhile, voice coil motors are fast in response speed and small in volume. The antenna of the present system is more compact and lighter in weight.