Energy internet is the key to achieve the energy reform goals in China, and the energy storage technology is one of the key technologies of energy internet, which has received spread attention and research. There exist various kinds of energy resources in the energy internet system, and different kinds of energy storage technologies are necessary to restore energy. Based on the analysis of principles and characteristics of energy storage technologies, the goals that hybrid energy storage systems need to achieve are presented. The energy demands of energy storage system are declared, and the necessity of the hybrid energy storage configuration is presented. On this basis, the calculation method of energy storage capacity needs and coordinated optimal configuration method of energy internet storage system are proposed and its efficiency and feasibility is verified through the calculation and result analysis of the case simulation.