A multi-channel wireless remote control system, which has N (an integer greater than one) wireless receiving devices and N (an integer greater than one) wireless transmitting devices. The N wireless transmitting devices corresponds to the N wireless receiving devices. The N wireless transmitting devices transmit frames to the respective N wireless receiving devices by a wireless carrier. Each frame contains a start bit, a device identification field to assign a receiving device, and a data field. Accordingly, i-th (i=1 to N) wireless transmitting device uses the device identification field to assign one of the receiving devices for receiving and sends data signal to the receiving device once every Tdi time.