In this study, a security supervision system is developed for the special circumstances of college dormitory. Methods and ways of theft is classed for special situation for the college dormitory. The different ways is used according to different types of theft. At last theft phenomenon is prevented availably. The system is mainly consisted of the microcontroller and GSM module. With using GSM mobile network, the situation in alarm location is sent to your phone screen by the most intuitive form of Chinese short messages or call,. It is not only simple, safe performance, lower manufacturing costs and the system does not require special care of the security personnel, have good applications.