Optical radio frequency transmission technology has a wide range of applications in ground based passive detection,distributed array synthetic aperture,and space detection,and many other areas,used to achieve signal interconnection and signal coherence between different sub arrays.In this paper,a composite microwave photonic time frequency transmission technology is proposed in this paper to address the problems of low phase stability,large time delay variation,and susceptibility to environmental influences in traditional optical Radio over fiber technology.By combining passive and active time frequency transmission technology,the fiber distribution of the local oscillator point frequency signal and the fiber return transmission of the intermediate frequency broadband signal are achieved respectively,and the technical advantages of the two are combined to achieve the purpose of the system′s high stability of the phase and broadband signal transmission.This system can realize the time frequency stable phase transmission of the local oscillator signal and the intermediate frequency signal at the center end and the remote end.Through comparative experiments and comprehensive tests,the stable phase transmission of 1.6GHz local oscillator and (1.6±0.5)GHz intermediate frequency signal is realized,and the transmission distance is 5km.After environmental test verification at -40～70℃,the phase fluctuation in the upstream and downstream microwave photonics link within the temperature change range is less than ±1.5°.