Abstract: A ccording to the theory and connotation of sustainable development, aimming at sustainable development of economic-energy-ecological integrated system , the evaluation indicatrix on the efficiency, the varing rate, the harmonization degree and the developing potentiality of rural energy system and rural energy supporting system were chosen to establish evaluation indicatrix system of sustainable development of rural energy in county, so that it can be used to evaluate and predict the sustainable developing potentiality and developing trend of rural energy.