The application discloses an electric power information processing method and system. The method comprises the following steps: acquiring the identity of a cable television smart card in a set-top box; transmitting the identity of the cable television smart card to a server through a cable television network; receiving electric power information corresponding to the identity of the cable television smart card returned by the server, wherein the electric power information comprises an electricity bill, outage information and/or electric charge reminding information; and displaying the electric power information at a preset position in a television channel picture played by the set-top box. Through adoption of the method, the steps of an electric charge reminding business can become simple and convenient, and the automation degrees of businesses such as electric charge reminding can be raised.