国民待遇是最惠国待遇的有益补充。在实现所有世贸组织成员平等待遇基础上 ,世贸组织成员的商品或服务进入另一成员领土后 ,也应该享受与该国的商品或服务相同的待遇。这正是世贸组织非歧视贸易原则的另一体现。国民待遇原则 ,严格讲应是外国商品或服务与国内商品或服务处于平 National treatment is a useful supplement to the most-favored nation. On the basis of the equal treatment of all WTO members, WTO members should also enjoy the same treatment as the goods or services of the country once they have entered the territory of the other member. This is exactly another manifestation of the WTO’s principle of non-discrimination in trade. Strictly speaking, the principle of national treatment should mean that foreign goods or services are at peace with domestic goods or services