In this paper, a set of intelligent lighting control system based on HT66F70A is designed to realize the shift between automatic mode and manual mode. The system controls light effectively through brightness sensor module which collects external light signal and pyroelectric infrared sensor module which collects personal infrared signal, combined with the remote control which can control indoor lighting with single-chip microcomputer program controlling the relay. It not only can effectively judge whether human exists, but also can choose the way of indoor lighting, having important practical value.