The textile industry plays an important role in creating Taiwan’s foreign exchange income. The vast majority of textile enterprises are traditional, labor-intensive small- edium enterprises. Over the recent years, with the increasing consciousness of people’s environmental protection around the world and the pressure of competition on the international markets, many textile ompanies are forced to pay close attention to the environmental protection. In view of this trend, the textile industry hopes the implementation of a green information system help to investigate the extent of business process improvement after implementing the system and key factors for success with an aim to effectively reduce cost, expand business opportunities, and march toward globalization. In this study, a case study approach is adopted to conduct an on-site survey on one enterprise in the upstream, mid-stream and downstream supply hains respectively. The business management cost is increased at the very beginning of the green supply chain introduction. However, the business process is improved after the mplementation of Internet interface. The green supply chain brings external effects: the romotion of corporate image, an increase of customer value and loyalty, reduction of customer complaints, and product conformity to global standards. It also generates internal effects: enhanced supply chain integration (for instance, increased information availability, process efficiency and supply chain partnership), the increase of sales revenue, procurement efficiency, and competitiveness.