Recently,the contradiction between energy,environment and economic development has become more and more prominent,hence the research on energy conservation and emission reduction is becoming more and more significant. By employing the analysis method of grey fixed weight cluster,this paper carries on the performance assessment of industrial energy conservation and emission reduction in Jiangsu province in recent years. The result shows that notable achievements have been made in year 2000,2009,2010 and 2011,while a fairly good job has been done in the years of 2002-2008,and at the bottom of the list is the performance in year 2001. In addition,with the combination of each indicator,this paper analyzes the causes of the result,and puts forward some relevant measures for the improvement of Jiangsu provincial energy conservation and emission reduction work.