This study is focus on the performance Credit rating system of corporate environmental behavior in Hangzhou. By doing statistical summaries and comparison of rating results of corporate environmental behavior from 2007 to 2010, most firms covered in this rating system in Hangzhou were behaving good or ordinarily toward environment. Corporate covered in the rating system show ineffective performance on promoting their environmental behavior by analyzing their rating results during four years. Some correlation has been found when study the variation of rating results and the pollution issues happened in Hangzhou. A dynamic management of the rating results and environmental behavior label system are recommended for further study and development.