Based on the studies of social responsibility reports and disclosure of environmental performance in China's 34 steel companies, this paper concludes that steel companies controlled by the State-owned Assets Supervision and Administration Commission of the State Council and larger companies are more positive to release their social responsibility reports. However, the factors such as the characters of a company's controllers, profitability, listing period have no influence on whether it will disclose social responsibility report or not. According to the disclosure of environmental performance issued by 12 companies, there is great difference among these companies. The two larger companies do a much better job; their important environmental performance indicators are well disclosed. And the disclosure of graphs and comparison between different years will be helpful for the information users to evaluate the environmental performance. On the contrary, other companies' reports are so simple and the important environmental performance indicators are so less disclosed that they can not satisfy information users' decision making.
