The issues on business and green management have been more and more emphasized in recent year. The influence of environmental performance on competitive advantage are also be concerned. This research discusses the influence of corporate green management on the environmental performance and competitive advantage, the influence of environmental performance on competitive advantage, and the role of environmental performance between corporate green management and competitive advantage. This research takes firms which have earned the ISO 14001 certificates prior to the end of 2006 as an empirical subject. The results show that corporate green management has significantly positive influence on environmental performance and competitive advantage, and that environmental performance also has significantly positive influence on competitive advantage. Lastly, environmental performance plays a partial mediator between environmental performance and competitive advantage.