The reason for the short operating life of infrared touch screen is analyzed in this paper. A new circuit and a new adaptive control means which can regulate the drive current adaptively is given out. And also, the normalized calculating means for coordinates is given out. The means presented in this paper can compensate the driving current for the infrared diodes according to the value of received signals. The infrared touch screen designed using this technique has a strong anti-jamming capability, and the operating life of it is extended greatly.