Energy is the basis of socio-economic development,the rationalization of the energy structure plays a basic role in regional economic development.Rationalization of industrial structure is the key that the successful realization of the industrial structure determines the effect in the future.In this paper,the survey starts in the background of the status of the energy industry in Hunan Province.With the theoretical perspectives and input-output approach,a rationalization quantitative model of the energy industry in Hunan Province has been built.According to the standards of the rational industrial structure,the energy industry sectors in Hunan Province are analyzed,with a reasonable method of adjusting and controling.Finally,the survey proposes the the rational strategies and advices.