Receiving and transmitting multi-optical-path optical system precision coaxiality adjusting method

The objective of the invention is to solve the technical problems that the mechanical adjustment efficiency and precision of the existing transmit-receive multi-optical-path optical system are low, and the multi-optical-axis consistency high-precision adjustment requirement of the transmit-receive multi-optical-path optical system cannot be met, and provides a precision coaxiality adjustment method of the transmit-receive multi-optical-path optical system. According to the precise coaxiality adjustment method, an optical centering processing technology and a theodolite auto-collimation imaging technology are combined, the optical axis of a primary mirror is taken as a main reference, main reference extraction and conversion are carried out on the basis of visualization of the optical axis of an auto-collimation theodolite, optical mirrors/mirror groups in a beam shrinking system, a transmitting branch and a receiving branch are sequentially and precisely adjusted, and the precision coaxiality of the optical m