由于理论前提的截然不同,传统国际贸易理论与国际直接投资理论是不相容的。尽管许多学者对两个理论的融合进行过积极的尝试,但成果并不显著。在已有研究成果的基础上,如果重拾长期被新古典经济学忽视的国际分工思想,并把这一思想沿着杨小凯等人的思路进行展开,那么,国际贸易理论和国际直接投资理论就将融合在统一的分析框架之中。 Due to the very different theoretical premises, the traditional theory of international trade is incompatible with the theory of international direct investment. Although many scholars have made positive attempts to integrate the two theories, the results are not significant. On the basis of the existing research results, if we regain the idea of ​​international division of labor that has been neglected by neoclassical economics for a long time, and follow this thinking along the lines of Yang Xiaokai and others, international trade theory and international direct investment theory Will be integrated in a unified analytical framework.