国际贸易理论自产生以来已经经历了200多年历史,期间经历了古典、新古典、当代贸易理论的演变。国际贸易理论在不断适应新的背景要求和面对国际贸易新现象的挑战过程中逐步完善和发展。本文从梳理传统国际贸易理论的思路出发,分析了战后新的现象对国际贸易理论的挑战和当代国际贸易理论的发展过程。得出清晰的判断,即:国际贸易理论在研究内容和研究方法上均呈现微观发展趋势,同时出现与其他多领域理论研究跨领域、跨学科融合 Since its inception, International Trade Theory has experienced 200 years of history, during which it experienced the evolution of classical, neoclassical and contemporary trade theories. The theory of international trade has been gradually perfected and developed in the process of constantly adapting to the new background requirements and facing the challenge of the new phenomenon of international trade. Based on the idea of ​​combing the traditional theory of international trade, this paper analyzes the challenges of the new phenomenon to international trade theory and the development of contemporary international trade theory. Come to a clear judgment, that is: the theory of international trade in both the research content and research methods have shown the trend of micro-development, at the same time with other multi-field theoretical research interdisciplinary, interdisciplinary integration