产业内贸易已经成为当前重要的国际贸易形式,对世界各国经济发展产生重大影响。深入研究产业内贸易的影响因素及最新发展趋势,对发展中国家具有重要的理论和实践意义。本文对产业内贸易的理论和模型研究进行综述,虽然各个模型之间尚缺乏统一的联系,但却沿着各自的研究方向不断深入发展,对国际贸易现象的解释能力也不断提高。 Intra-industry trade has become an important form of international trade and has a significant impact on the economic development of all countries in the world. Studying in depth the influencing factors and the latest development trends of intra-industry trade have important theoretical and practical significance for developing countries. This article summarizes the research on the theory and model of intra-industry trade. Although there is still a lack of unity between the various models, their development direction along with their respective research directions and the ability to explain the phenomenon of international trade are also increasing.