国际竞争的变化导致国际贸易出现了一系列新倾向 ,其中最为传统理论所无法解释的是 ,世界贸易中的大部分是国与国之间在同一产业内既有出口也有进口的产业内贸易。通过对产业内贸易理论的分析 ,说明产业内贸易对发展中国家的重要性 ,并由此对中国加入 WTO后的贸易政策提出建议 The changes in international competition have led to a series of new trends in international trade. The most traditional theory that can not be explained is that most of world trade is intra-industry trade between countries that have both exports and imports in the same industry. Through the analysis of the theory of intra-industry trade, it shows the importance of the intra-industry trade to the developing countries and gives some advice on the trade policy after China’s accession to the WTO