In order to play the match game of the produced robot by each student in a campus robot contest, we develop the infrared rays remote control system without a wrong action by infrared rays signal interference. This system is able to operate several robots in 8 robots individually by giving prefix number to each robot. Although each constitution of using infrared rays remote control transmitter is all the same, we are able to operate three motors of an optional robot by setting prefix number of each transmitter. By giving several characteristics to infrared rays sending and receiving data, the wrong robot action by the interference of the infrared rays is prevented. This system is produced actualIy, and it is confirmed that all robots'actions are desirable.