Multi-mode communication device and multi-mode communication method

The invention discloses a multi-mode communication device and a multi-mode communication method. The multi-mode communication device comprises a processor, a first communication unit used for short-distance wireless communication, a second communication unit used for transmitting a narrow-band carrier signal and a broadband carrier signal and a power line isolation coupling unit, wherein the processor is used for sending first data to the first communication unit and the second communication unit; the first communication unit is used for modulating received first data sent by the processor to second data and sending the second data; and the second communication unit is used for respectively modulating the received first data sent by the processor to third data and fourth data and sending the third data and the fourth data to a power line through the power line isolation coupling unit, and a power line narrow-band carrier communication mode, a power line broadband carrier communication mode and a short-distanc