The invention discloses an air quality detecting system facing to smart home. The system comprises a data wireless transceiver wi-fi module for realizing wireless transceiver of state information, a sensor data acquiring module for acquiring data of a dust sensor, a temperature/humidity sensor and a gas sensor mounted indoors, a data processing module for analyzing and processing the data, a human-computer interface module for displaying present node monitoring conditions, a warning module for starting a warner when the air quality harms the human health, and a mobile communication terminal for controlling operation of indoor electric appliances to purify indoor environment. The air quality detecting system facing to smart home, provided by the invention, is rich in functions, effectively satisfies the requirements of convenience and high efficiency in indoor air detection, and has a feedback mechanism.