本文介绍了一种基于GSM 的住宅智能报警系统。单片机为系统的控制核心，热释电传感器对现场防区进行实时监测。有警情发生时，该系统可自动发出声光电报警，同时向户主发送警报短信。系统也可根据家中有无人情况，利用加密、解密进行系统布防和撤防状态的切换。事实证明该报警系统满足了现代住宅防盗的需要。关键词：热释电传感器；单片机；GSMThe Design of Domicile Intelligent Alarm System Based on GSM Module Feng Juan(1), Zeng Li-Hua(2) (1. College of Information Science and Technology ; 2.College of Mechanical and Electrical Engineering ,Agricultural University of Hebei ,Baoding, Hebei, 071001) Abstract：A domicile intelligent alarm system based on GSM module was introduced. SCM was a control core of the system；pyroelectric infrared sensor was used for monitoring defense area real-time. When some alarm situation was happened, the system could give an alarm by the way of sound & light & electricity. At the same time, itwould send an alarm message to householder. According to whether the householder wasin the house, the system could switch setting and removing defense by the methodsof encryption and decryption. It proved that the alarm system could meet the needsof modern domicile anti-theft.Keywords: Pyroelectric Infrared Sensor，SCM，GSM