Abstract: Transportation infrastructure plays a decisive role in the development of bilateral trade. On the basis of the trade data of China and the 64 countries along the “One Belt and One Road” during the period of 1996-2016, this paper employs the seemingly unrelated method to conduct an empirical analysis of the influence of the transportation infrastructures on the export trade. It introduces the spatial model idea into the model of the transportation infrastructure and China’s export trade, establishes the adjacent effect function, and empirically analyzes the influence of the transportation infrastructure of the importing countries and their neighboring countries on China’s export trade. The findings show that the transportation infrastructures of the importing countries and their neighboring countries have a positive effect on China’s export trade. Along with the increase of per capita GDP, the transportation infrastructures will decrease its influence on China’s export trade. To strengthen the construction of transportation infrastructures in the middle-income countries will significantly promote the export trade of China’s to the“Belt and Road”countries.

Key words: transportation infrastructure; adjacent effects; China’s export trade