Abstract: Making greater efforts to attract foreign investment is an important manifestation of a high-level opening up. In recent years, while the total amount of foreign investment has steadily increased, the additional investment by foreign investors has been somewhat weak, becoming a weak link for China to attract foreign investment. Based on this, this study explores how to promote additional foreign investment from the perspective of regional trade agreement networks. The findings show that increasing the centrality of regional trade agreement networks in enterprises can help promote additional foreign investment. The mechanism research has found that improving the centrality of regional trade agreement networks for enterprises can help fill the supply gap in the host country’s supply chain, enhance international supply chain resilience and enterprise technological innovation levels, thereby promoting additional foreign investment. The expanding analysis reveals that the stronger the internal and external financing capabilities of enterprises, the more conducive it is to promoting foreign investment by increasing the centrality of regional trade agreement networks. The additional investment by domestic investors can further promote the additional investment by foreign investors. Therefore, we should accelerate the enhancement of China’s position in the global regional trade agreement network, improve the supply capacity of domestic supply chains and the resilience of international supply chains, promote the construction of commercial credit systems, and actively explore joint investment mechanisms between domestic enterprises and foreign investors.

Key words: regional trade agreement network, centrality of network, additional foreign investment