Abstract:The factor endowments of countries along the “Belt and Road” are significantly different. This article measures the labor, capital, technology, and natural resource factors of the 51 countries along the “Belt and Road” from 2003 to 2017, and constructs an index of factor endowment to reflect the overall state of factor endowment in each country along the line, and then calculates the capital labor ratio, technical labor ratio and natural resource labor ratio of each country. The countries along the route are divided into seven types according to the factor sufficiency: capital technology resources abundance type, capital technology abundance resources scarcity type, capital resources abundance technology scarcity type, capital abundance technology resources scarcity type, technology abundance capital resource scarcity type, resource abundance capital technology scarcity type, and capital technology resource scarcity type. Finally, this paper uses a dynamic GMM model to analyze the impact of factor endowment differences in countries along the line on China's OFDI. The results show that: (1) The difference in factor endowments of countries along the “Belt and Road” affects China ’s foreign direct investment; (2)Under the “Belt and Road” initiative ,technical factors have the greatest impact on the development of OFDI and the countries along the route; (3) Different regions have different endowment advantages, and the labor factors in Southeast Asia are obvious; the technical factors and resource elements in Mongolia, Russia and South Asia are obvious; capital factors in South West Asia are obvious; resource factors in Central and Eastern Europe and Central Asia are obvious.