In order to improve the utilization rate of study room and realize intelligent management. This paper presents a scheme design of intelligent control system for counting the number of students in study room and using electric equipment. The system is composed of STM32 single chip microcomputer, number detection module, communication module and so on. The intelligent management system will detect the number of people in real time, and intelligently manage some electrical devices, so as to achieve the effect of population statistics and power saving.