Multi-mode switching wireless receiving/transmitting device and multi-mode switching method thereof

A multi-mode switching device and a multi-mode radio switching method, having a radio interface for switching a plurality of frequency bands elastically. The radio apparatus comprising: a first RF transceiver circuit, a transceiver may perform a first frequency band RF signal; a second RF transceiver circuit, send and receive radio frequency signals may perform the first frequency band or second frequency band; first and second frequency synthesizer, respectively, may produce a second carrier a first carrier of the first frequency band and the second frequency band; switching circuit, the output of the first carrier to the first RF transceiver circuit, and based on the control signal, determining an output of the first carrier and the second both one-carriers to a second RF transceiver circuit.