Smart home system

The invention discloses a smart home system, which comprises a plurality of sensors, a plurality of household appliances, a controller, a server and a client. The controller receives feedback information of various sensors and controls the various household appliances to correspondingly make responses; the controller is connected with the server through a communication module, and the server is connected with the client; and interaction information between the controller and the server is transmitted through a communication protocol and is encrypted through an encryption protocol, wherein thecommunication protocol specifically comprises the following steps: establishing connection; generating a new thread; matching a secret key; and processing information. The household condition is sensed through various sensors, so that people can know the household condition in time and make a coping strategy in time to reduce losses. The communication protocol has characteristics of high flexibility and strong expansibili