The invention provides a hybrid and intelligent updating method for a boiler efficiency combustion optimization model. At present, online real-time optimization of the boiler efficiency is always a difficult problem for industrial research personnel, because the change of coal types and the time-varying characteristics of the combustion law can cause the model prediction errors to be increased, and then boiler combustion optimization can be caused to lose effect. According to the hybrid and intelligent updating method for the boiler efficiency combustion optimization model, an updating method capable of judging whether the model needs to be updated or not and correcting the re-modeled model in the updating process is specifically constructed, the model can be updated effectively and timely, and therefore the prediction precision of the model is improved; and both online optimization and offline optimization can be carried out.