A smart home system and a product thereof, comprising two types of smart home products and a method for building and operating a smart home system. One type of product is a central control unit serving as the core of the smart home system, and the other type is a human-computer interaction product. The smart home system is composed of a central control unit, human-computer interaction products and other various home products. The central control unit serves as a monitor with respect to various home products and monitors the running of the home products, and serves as a server with respect to the human-computer interaction products, the human-computer interaction products are clients with respect to the central control unit, and the control unit receives service requests of the human-computer interaction products and returns request results thereof, and can actively contact them to acquire various items of data.