The utility model relates to a transmitting and receiving terminals of space laser communication network deployment, optical antenna, achromatism half -wave plate, polarization beam splitter prism, the beam splitter of transmitting and receiving terminals for meeting in proper order, transmitted light path to the received signal detector of beam splitter, reflected light path to narrowband detector. The receiving beam is the linearly polarized light of 67.5 contained angle for the polarization direction and achromatism half -wave plate fast -axis direction. The narrowband detector only responds one of 2 kinds of wavelength, and feedback signal inserts laser transmission system. Receive the light modulation during operation and be P linearly polarized light behind the achromatism half -wave plate, reach the beam splitter through the polarization beam splitter prism, beam splitting to received signal detector and narrowband detector, laser transmission system presses narrowband detector signal and selects and receive the different wavelength outgoing of light. The utility model discloses automatic identification receives optical wavelength, selection and receives the different emission wavelength of light, and the access is met to freely following of each laser terminal in the network deployment of realization laser communication, and the optical antenna signal of receiving and dispatching sharing is not influenced.