A regional evaluation index system of sustainable development for Yulin City,the state base of energy and heavy chemical industry,was established using PSR model(pressure-state-responses),the sustainable development of Yulin City during the period of 1996-2010was analyzed and evaluated with the method of fuzzy comprehensive evaluation,the PSR coordination character for Yulin City was valued with the system coordination index and the future sustainable development in 10years was forecasted using grey system budget model GM(1,1).The results indicated that:(1)Since 1996,the sustainable development of Yulin City had been improved remarkably with the comprehensive evaluation value of sustainable development increased from 0.109 8to 0.672 2though it was still low in 2010;(2)The sustainable development system was in a good condition with the coordination degree on the up trend;(3)During 2010-2020the comprehensive evaluation value of sustainable development would continue to increase and reach at 1.434 5in 2020 when entering into a stage of sustainable development.