Aiming at the wasted serious program of the university classroom lighting energy, the project of the classroom lighting energy saving intelligence control system be put forword based on single chip microcomputer. The intelligence system is composed of the hardware and the software, taking single chip microcomputer as the main control core, using the light-to-frequency converter, the human body temperature and infrared sensor. The existence of human body be detected by the human body temperature and infrared sensor, the current frequency-field chip be judged by photoconductive resistance. The classroom lighting intensity and intelligence lighting control system be achieved. The system saves significant energy and works intelligently. This system had many advantages. For example, the physical volume is small, the system is conveniently controlled, the credibility is high, the appropriation is strong, and its price proportion is ideal, etc. The experiment proved that the system can satisfy the control command of the classroom’s light device, so it could largely reduce the consuming of energy resources.