A wireless video transmission device configured to be connected by wire with at least one piece of first video equipment, receive a video frame signal from said piece of first video equipment, and wirelessly transmit said video frame signal to a wireless video reception device connected by wire with at least one piece of second video equipment; comprising: a reception part receiving messages including control data for controlling said piece of second video equipment and a logical address for said piece of second video equipment from said piece of first video equipment; and a wireless transmission part transmitting wirelessly the message received in said reception part together with said video frame signal, to said wireless video reception device, wherein a logical address and a physical address of said piece of first video equipment and a logical address and a physical address of said piece of second video equipment in a transmission-side wired network having the wireless video transmission device and a device connected by wire with the wireless video transmission device are associated and stored in the wireless video transmission device; wherein the physical address of said piece of second video equipment in the transmission-side wired network is set to be equal to a physical address of the wireless video transmission device; wherein the physical address of the wireless video transmission device in the transmission-side wired network is fixed to be a predetermined address; wherein, if the physical address corresponding to the logical address of said piece of second video equipment in the transmission-side wired network, which is contained in the message received by the reception part and sent from said piece of first video equipment, is set to correspond to the physical address of the wireless video transmission device, then the message is sent from the wireless transmission part to the wireless video reception device. a reception part receiving messages including control data for controlling said piece of second video equipment and a logical address for said piece of second video equipment from said piece of first video equipment; and a wireless transmission part transmitting wirelessly the message received in said reception part together with said video frame signal, to said wireless video reception device, wherein a logical address and a physical address of said piece of first video equipment and a logical address and a physical address of said piece of second video equipment in a transmission-side wired network having the wireless video transmission device and a device connected by wire with the wireless video transmission device are associated and stored in the wireless video transmission device; wherein the physical address of said piece of second video equipment in the transmission-side wired network is set to be equal to a physical address of the wireless video transmission device; wherein the physical address of the wireless video transmission device in the transmission-side wired network is fixed to be a predetermined address; wherein, if the physical address corresponding to the logical address of said piece of second video equipment in the transmission-side wired network, which is contained in the message received by the reception part and sent from said piece of first video equipment, is set to correspond to the physical address of the wireless video transmission device, then the message is sent from the wireless transmission part to the wireless video reception device.