The invention discloses a fault identification method and device. The method comprises that operation information of heating equipment is obtained; and the operation information is analyzed accordingto a predetermined model, and a fault type of the heating equipment is determined. The predetermined model is obtained by training at least one group of training data by means of machine learning, andeach group of training data comprises an operation parameter and the corresponding fault type. The technical problem that the fault type of the heating device cannot be identified automatically is solved.