An information transceiving method, applied to an information transceiving system comprising a transmission device and a reception device. The transmission device comprises a first TX input interface following a first transceiving specification and a second TX input interface following a second transceiving specification. The reception device comprises a first RX output interface following a third transceiving specification. The information transceiving method comprises: (a) respectively receiving first, second information by the first, second TX input interface; (b) classifying according to information characteristics of the first, second information by the transmission device, to acquire first, second classifying results of the first, second information; and (c) transmitting the first information or the second information to the first RX output surface via a physical transmission line, corresponding to the first, second classifying results by the transmission device.