Abstract: Introducing the performance evaluation indicator system of energy saving and emission reduction which includes energy consuming per ten thousand yuan of GDP, industrial sulfur dioxide emission and carbon dioxide emission per ten thousand yuan of GDP as inputs index, with GDP, industrial sulfur dioxide reduction quantity and carbon dioxide strength reduction as outputs index, this paper made an empirical study of 13 cities in Jiangsu province on energy saving and emission reduction performance by SORM-BCC super-efficiency model. It concluded that the overall performance of energy saving and emission reduction is better in Jiangsu province in 2001—2010, namely the DEA efficient, except in 2006 and 2008. But performances and returns to scale of different prefectures and regions are different. The energy saving and emission reduction performance of northern Jiangsu region is highest, following by the southern part while the central part is the worst. The differences in cities of Northern Jiangsu region are significant, such as that Xuzhou and Huaian's performances were obviously lower than other cities in the region, while Suqian and Yancheng ranked first and second in the province. The paper improved the energy saving and emission reductions targets of 13 Prefectures of Jiangsu in 2010 in order to achieve the optimal. According to the research results, the study provided some policy suggestions as follows. To improve the energy saving and emission reductions performance, Jiangsu province could increase the technology of innovation for the energy saving and emission reductions,improve energy efficieney, strengthen the heavy chemical industries conformity dynamics, and optimize the energy structure and the structure of foreign trade.