The present invention discloses a radio frequency module supporting multiple carriers, a base station, and a carrier distribution method. The radio frequency module supporting multiple carriers includes a carrier generating apparatus, a carrier distributor, a carrier synthesizer, and at least two transmit channel, where the carrier generating apparatus is connected to the carrier synthesizer, the carrier synthesizer is connected to the transmit channels, and the carrier distributor is separately connected to the carrier synthesizer and the transmit channels.