A design method for a new type of infrared remote control multi-channel switch system is introduced and the basic frame and operating principle of the system is discussed. A pair of encoder and decoder MC145206/145207 is chosen to encode and decode the instruction signal, and the instruction signal is carried to siglechip to realize multi-channel control by use of infrared remote control. An array of diode switches in combinatorial logic is chosen to encode the switch keys in the transmitting system to control the objects selectively.Applying singlechip in the receiving system, this method can make the best of singlechip′s resource of software and hardware and character the system flexible control, convenient extension and realized multi-channel,multi-function control.