The invention provides an intelligent home energy management system based on G.hn. the intelligent home energy management system based on the G.hn comprises a home interaction terminal, a home gateway and a power-utilization terminal, and combines a power line, a coaxial cable and a telephone line together by utilizing an existing family cable network based on a G.hn communication standard. Communication of different network standards is achieved through a network layer, and communication among different network standards is achieved through the family gateway to achieve compatibility of family wideband communication. The intelligent home energy management system based on the G.hn enables a user to take part in management of home power utilization actively, improves enthusiasm of the user, and enables energy to be used sufficiently. At the same time, the intelligent home energy management system based on the G.hn supports family network cables of all types, the user can install own terminal service equipment at any time, and therefore cost is reduced.