Abstract
The principle of non-discrimination as one of the most important international trade principles, is enriched by the dispute settlement body of World Trade Organization. However, drawing the line clearly between whether there is a discrimination isn’t easy. In addition, there are provisions regarding Most-Favoured-Nation Treatment and National Treatment under the Agreement on Technical Barriers to Trade as well. Thus, how to evaluate the relationship between the TBT and GATT is not indisputable. Firstly, this paper introduces TBT, its aims and the basic principles; then observes the current practice of TBT, multilateral agreements and bilateral agreements. This paper tries to build an analysis of the intersection between theory and practical approach. At last, it focuses on TBT article 2.1 by case studies, observes the subject matters, the standard of examination, and the development. It seems that the application of TBT is expanding via US – Clove Cigarettes, US – Tuna II (Mexico) and US – COOL. However, this year the AB report of EC – Seal Products seems to limit the scope in certain extent. The response of members and the development of the international trade will be further researched in the future.