With the development of the society and the improvement of the economic level, People's requirements for life are more and more personalized, customized and automated, and for the convenience and pleasure of life has a higher demand. Smart home is an inevitable product of the current era, it can control the lighting and all kinds of household appliances through the smart switch instead of the traditional switch, to achieve a variety of pre-control functions; Through temperature and humidity detection and air quality detection, can be air conditioning, heating and fresh air system for regulation. The system can be adjusted to the most comfortable state according to the parameters adjusted by ordinary residents and the environment detection. Besides the improvement of life quality and comfort, the smart home pays great attention to the intelligent security. Just so-called, security is the premise of all activities, is the first requirement of intelligent home system, intelligent security is the first component of smart home. Through the security system of various security detectors and access control system, visual intercom, video and video recording, intelligent home constitutes a three-dimensional defense system. Visual intercom allows users to clearly observe visitors, talk to visitors, and open doors remotely. The alarm system can send the alarm information to the community property automatically, and the smart home phone or SMS will send the alarm information to the owner to ensure home safety.