The invention introduces a link-type optical fiber repeater signal transmission method and a link-type optical fiber repeater which comprise a power supply, a microprocessor, an antenna feeder system, a wireless receiver, a wireless transmitter, an outside optical fiber, a mixer, a power divider, an optical splitter, an optical transmitter, an optical receiver and the like, so that the optical fiber repeater can offer wireless communication relay transmission services to various wireless communication system users in special areas and tunnels, can meet the requirements of reducing the number of used optical fibers, the interference and isolation among systems and the like, so as to realize the long-distance optical transmission relay among optical fiber repeaters when there are a plurality of optical fiber repeater links, and be able to adapt to the relay transmission of various wireless communication systems.