Based on definition of United Nations Environment Programme（UNEP），industrial parks in this thesis include all kinds of industrial parks，development areas，industrial bases，industrial lands and so on in our country. With the rapid advance of industrialization and urbanization in China，Industries and enterprises show obvious agglomeration trend，various types of industrial parks have become important engines for the development of industrial economy in China. Jiangsu province，Zhejiang province and Shanghai city in Taihu Basin approximately gathered nearly 2000 various levels of industrial parks，which account for more than 60% of their industrial output value. Meanwhile，annual wastewater discharge exceeds 2.5 billion tons，which makes tremendous impact on water environment in this river basin. What’s more，a large number of industrial parks in this river basin have confused management systems. Performance appraisal and management system has not been established. They are short of park environmental management agencies and regulatory power. Therefore，some industrial parks have a large environmental risk. This thesis takes water environmental performance evaluation of industrial parks as the starting point with a view to establishing water environment performance evaluation index system that can scientifically and comprehensively reflect the water resources use and water environment protection in industrial parks of this river basin. In the end，in order to ensure the water environment performance evaluation and improve the industrial park water environment performance，this thesis puts forward some suggestions for improving key management systems. We should implement main responsibility of water environment protection of the park management agency. We should make industrial parks conduct total pollutant emission reduction targets. We should set up water environment target in industrial parks according to basin control principles. We should establish a sound environmental statistical system for industrial parks in the basin.