By using the methods of content analysis and comparative analysis, the mode, content, quantity and quality of the environmental information disclosure were analyzed quantitatively through selecting 61 listed companies’ data of 2011 in Hunan province. The results showed that the listed companies in Hunan are tend to express the environmental information in board of directors, statement notes and social responsibility report, and the environmental information disclosure quality of the listed companies is not high. The listed companies of heavy pollution industry have better performance for the environmental information disclosure than others. In order to improve the levels of environmental information disclosure and information transparency in listed companies, we should implement the oversight responsibility of government, clear the main responsibility of enterprise and promote the public participation.