Abstract: High quality development of foreign trade is an important part of the construction of modern economic system. This paper constructs the evaluation index system and measurement method of high-quality development of foreign trade from four aspects： foreign trade scale, foreign trade structure, foreign trade competitiveness and foreign trade sustainability, and makes a theoretical and Empirical Analysis on the industrial path and technical path of OFDI to promote high quality development of foreign trade. The research shows that China's OFDI can significantly promote the high quality development of foreign trade. The intermediary path of industrial structure upgrading and technological progress shows significant presence. In order to promote the high quality development of China's foreign trade,the government should further improve relevant policies and measures,promote enterprises'OFDI,and deepen the reform of guarantee mechanisms such as industrial transformation and technological innovation; Enterprises should increase the investment in research and development of technology, increase foreign investment in knowledge-intensive and technology-intensive industries and strengthen cooperation and communication among enterprises.

Key words: OFDI, High-Quality Development of Foreign Trade, Industrial Structure Upgrade, Transformation of Foreign Trade Development Mode, Global Value Chain Division of Labor, Countries Along "the Belt and Road"