Energy Internet can be understood as an energy peer-to-peer exchange and sharing network that comprehensively uses advanced power electronics technology, information technology and intelligent management technology to interconnect a large number of new power networks, oil networks, natural gas networks and other energy nodes composed of distributed energy collection devices, distributed energy storage devices and various types of loads, so as to realize two-way flow of energy. As an important part of the energy Internet, energy storage supports the energy storage and allocation process in the whole energy Internet. Molten salt energy storage technology is a technology that uses the sensible heat of molten salt to store heat. It is one of the most mainstream high-temperature heat storage technologies in the world. It has the advantages of low cost, high heat capacity and good safety. It has been applied in solar photothermal power generation in Spain and China.