Abstract: With the development of new energy technologies, the more and more strategic emerging industries are developing rapidly in the field of energy and we need the energy industry maturity evaluation method to provide scientific decision-making support for the development of the industry.This paper applies the industry maturity evaluation method in the field of energy and constructs the energy industry maturity evaluation system from the perspective of the multiple technologies and products, and gives the levels of maturity and their evaluation standards.At last, based on the fuzzy mathematical method and the hierarchy analysis method, the paper establishes the evaluation model of the energy industry maturity levels.