The invention discloses an intelligent household energy internet of things system for an intelligent city system, which belongs to the internet of things system. The system of the invention comprises an object platform, a communication platform, a management platform, a service platform and a user platform, wherein the object platform at least comprises an energy meter, and the energy meter is accessed to an internet of things intelligent gateway; the communication platform is connected with the object platform and the management platform respectively via a network; the management platform is connected with the communication platform and the service platform respectively, and at least comprises an operator server; the service platform is connected with the management platform and the user platform respectively and at least comprises an operator serve; and the user platform is accessed to the service platform or the management platform, and at least comprises a user end. Connection in one-to-one, many-to-one, many-to-many and other modes can be realized among each server in the Internet of things system, the Internet of things intelligent gateway, the user and the energy meter for transmission of sensing information and control information, and different Internet of things use requirements in the smart city system can be met.