With 145 participants, World Trade Organization (WTO) is one of the most important international trade organizations. At present, another more than 20 nations and independent tariff regions are applying for joining WTO. By common understanding or voting among the participants, content of WTO pact criterion, responsibility and obligation of WTO participants and legalization and organization of multilateral trade systems are determined. Besides, the participants constitute trade rules for their own nations on the basis of WTO solutions. In addition, WTO is a forum in which its members discuss how to establish trade criterion; a standard by which execution of the relative pacts is supervised among the participants; a technological cooperation in which the relative execution is assisted.
After Uruguay Round, service industry and intellectual Property rights are included in WTO topics for discussion, aside from the conventional topic of trade. Since the first session of Singapore Minister in 1996, topics such as economic development, competition policy, vitrification of governmental purchases, and massages technology and so on have also gained further discussion in WTO. Besides, all members are equally restrained when the relative judicatory trade issue against WTO pacts happens. Virtually, WTO can be considered as a United Nation of Economy and Trade. Additionally, through closely cooperating with the United Union and other professional international organizations such as International Monetary Fund (IMF), World Bank (WB), World Customs Organization (WCO), World Intellectual Property Organization (WIPO), WTO has become a general hinge of international economy and trade systems.