上诉机构作为WTO体制甚至是国际法领域的一项创新,在过去的八年中在树立成员方对争端解决机制的信心从而维护WTO多边贸易体制方面发挥了积极的作用。本文探讨和总结了WTO上诉机构在法律解释上的权力、渊源、解释的原则和规则以及解释的效力,以期为我国参与WTO争端解决实践提供理论上的参考。 As an innovation in the WTO system and even in the field of international law, the appellate body has played a positive role in establishing the multilateral trading system of the WTO in the past eight years by establishing the confidence of its members in the dispute settlement mechanism. This article explores and summarizes the principles, rules and rules of WTO appellate bodies’ power, origin, explanation and effectiveness of interpretation in order to provide a theoretical reference for our country to participate in WTO dispute settlement practice.