Abstract: A predictive control system and regulatory method for a temperature of a livestock house are provided. The predictive control system includes a temperature and humidity sensor, a breeding environment temperature dynamic requirement module, an environmental controller and an environmental regulation implementation mechanism, where the environmental controller is connected to the breeding environment temperature dynamic requirement module and the temperature and humidity sensor; the environmental regulation implementation mechanism is connected to the environmental controller and is configured to perform corresponding environmental regulation according to a command from the environmental controller. The regulatory method controls a temperature of a breeding environment based on a livestock breeding environment temperature dynamic setting model, a livestock breeding environment temperature prediction system based on a GM (1,1) model, and a grey predictive fuzzy system based on the GM (1,1) model.