The invention provide a communication training method. The method comprises the following steps that head end equipment sends a carrier wave training signal according to a preset frequency; relay equipment and terminal equipment determine a self-signal sending frequency according to a frequency of the carrier wave training signal. By using the communication training method provided in the invention, when a communication system processes uplink data and downlink data, the head end equipment, the relay equipment and the terminal equipment use a same working frequency so that transmission quality of the uplink data and the downlink data is increased.