The environment-protection has been the major issue all over the world. In order to prevent the negative influence; firms should pay close attention to their daily operation. First, this paper analyzes the actual state about transparency of environmental information in Taiwan listed companies from 2004 to 2008. Second, the difference transparency of environmental information between firms with better corporate social performance and firms with worse corporate social performance is examined. Finally, this study explores the relationship between transparency of environmental-protection and the financing indexes. Logistic regressions analysis and multiple-regression analysis are adopted to test the hypotheses. The empirical result shows when firms have better corporate social performance, they will have more transparency of environmental information. Furthermore, there is negative association between transparency of environmental information and the ranking of Taiwan Corporate Credit Risk Index, but does not achieve the statistic significantly level. Additionally, there is significant positively association between transparency of environmental information and returns on stock.
