In this paper, we designed a building security The program according to "multiple preventive system" design, community perimeter of the region the focus of the site, buildings and household interior, respectively, set the appropriate technology to guard against the The system has perimeter guard system, CCTV monitoring system, building a visitor non-visual intercom system, home security alarm system, off-line type patrol management system, composed of community security center Perimeter Protection System at community perimeter wall using active infrared mode for shooting the police; office building entrances, community entrances, garage entrances, building entrances and other key parts of unit color television monitor mode; buildings visitors intercom system interconnection way to achieve the building intercom, electric control lock, two-way calling features such as; home security alarm system is mainly based on all households in an emergency alarm button, the bottom of the residential, two-story windows and doors installed magnetic, passive infrared detectors and other alarm devices, all alarm signals are transmitted using network forms of property management; Patrol Patrol optional offline-based management Because of the content of Security Systems and more miscellaneous, Designed To avoid confusion caused by too long, where only the selected anti-theft perimeter alarm system and building intercom system to do these two parts in Keywords: building security to guard against multiple subsystems