建立了一个基于GSM网络及短信息平台上的家庭安防系统，设计中采用了STC89C52单片机系统、无线GSM短信模块及传感器技术。(The system in this paper has some advantages, such as simple hardware structure and high cost-performance and so on. The Modularized program is convenient to expansion of the system. The test results indicated that the family security system based on short message platform realizes long distance alarm and control function, and achieves the goal of long distance monitoring and controlling towards family. It has good application prospects.)