Abstract: Energy internet is studied as a promising electricity-centered energy network, which revolves around reliable framework, widely interconnected, highly intelligent and open interaction. In this paper, we proposed the local-area energy internet framework with the core of energy switches and energy routers based on the thought of software defined network（SDN） and the theory of cyber-physical systems（CPS）. We respectively modeled and analyzed the core structure and main functions of energy switches as well as energy routers. We used open north-bound and south-bound control protocol, and put forward the integrated control method of energy internet. Finally, several typical application scenarios were given.