New energy generally refers to renewable energy developed and utilized on the basis of new technologies, including solar energy, biomass energy, hydro energy, wind energy, geothermal energy, wave energy, ocean current energy and tidal energy, as well as the thermal cycle between the ocean surface and deep layer; In addition, there are hydrogen energy, biogas, alcohol, methanol and other energy sources that have been widely used, such as coal, oil, natural gas and water energy, which are called conventional energy. With the limitation of conventional energy and the increasingly prominent environmental problems, new energy characterized by environmental protection and renewable has attracted more and more attention.Recently, in China, new energy that can form industries mainly includes hydropower (mainly small hydropower stations), wind energy, biomass energy, solar energy, geothermal energy, etc. it is a recyclable clean energy. The development of new energy industry is not only an effective supplementary means for the whole energy supply system, but also an important measure for environmental governance and ecological protection. It is the final energy choice to meet the needs of sustainable development of human society.