The invention relates to the technical field of RFID, in particular to a novel RFID ex-warehouse metering device. The novel RFID ex-warehouse metering device is characterized in that an RFID reader-writer and at least two radio frequency antennas are arranged in a radio frequency unit, a micro-control chip, a radio frequency signal transmitting circuit, a radio frequency signal receiving circuit, a communication circuit, a multichannel radio frequency output switch control circuit and matching circuits are arranged in the RFID reader-writer, the micro-control chip is connected with the control signal input end of the radio frequency signal transmitting circuit, the control signal input end of the radio frequency signal receiving circuit and the control signal input end of the multichannel radio frequency output switch control circuit, the radio frequency signal transmitting circuit and the radio frequency signal receiving circuit are connected with the multichannel radio frequency output switch control circuit, the multichannel radio frequency output switch control circuit is provided with one input end and two or more output ends, and each output end is connected with the corresponding radio frequency antenna through the corresponding matching circuit. The novel RFID ex-warehouse metering device has the remarkable advantages of being small in size, low in cost, high in read-write speed, accurate in monitoring and the like.