The point-to-point laser communication technology has been more mature.However,network communication problems among different platforms are still unable to be solved.A new design method of the optical antenna networking communication is put forward,which can achieve multi- point synchronous duplex laser communication.Firstly,the principle of optical antenna is analyzed and validated by modeling and simulation.Then,the structure design and the working mode of the optical antenna are presented.Finally,the working range for duplex communication and optical antenna multi-platform is analyzed through optimal control algorithm.Assumes the rotational parabolic aperture is 300 mm,this system can achieve 360° azimuth and over 90°elevation range.For network communication requirements of GEO（geosychronons earth orbit）-GEO-OGS（optical ground station）,the initial optical antenna is intended.It has an important meaning for promoting the laser communication application technology in a wide range of areas.