The invention discloses a prediction method and device for traffic data of an electric power information network and a network upgrading method and device. The prediction method for the traffic data of the electric power information network comprises the steps that the traffic data of the electric power information network is acquired; a time sequence of the traffic data is generated according tothe traffic data; and traffic trend predication data, associated with time, of the electric power information network is generated according to the time sequence. Accordingly, the technical problem that in the prior art, the traffic data of the electric power information network cannot be predicted is solved.