Abstract:As China's industrial structure ushered in the historical point of transition and upgrading, the export of high-tech products has become the development direction of China's future foreign trade transactions. There are many factors that affect the export complexity of China's high-tech products, but there are few literatures on the impact of financial support and R & D innovation on the export complexity. This paper collects relevant data from 2008 to 2018, constructs a panel model to study the impact of financial support and R & D innovation on export complexity. The results show that: financial support, R & D innovation and their interaction variables all show a positive correlation with export complexity. In different regions of China, financial support and R & D innovation are positively related to export complexity, but the impact is different. Financial support can have an indirect impact on export complexity through R & D innovation, but R & D innovation cannot have an indirect impact on export complexity through financial support.