Since China put forward the Belt and Road Initiative in 2013, China has actively worked with the Initiative to revitalize relevant regional resources and encourage developing countries to participate in global social governance from a global macro strategic perspective. It should be noted that the initiative has promoted connectivity and exchanges among countries by promoting border infrastructure construction. This strategic direction is in line with Indonesia’s “global marine fulcrum” plan. Moreover, the development of infrastructure construction in Indonesia lags behind. These factors have provided more opportunities and development space for The cooperation between China and Indonesia in the field of infrastructure construction, and the economic cooperation is getting closer and deeper. This paper, based on the relevant data collected in Indonesia from 2003 to 2018, verifies the impact of China’s direct investment on Indonesia’s economic growth by using the method of mediation effect verification and explores the impact of specific approaches.The results show that China’s direct investment in Indonesia can promote local infrastructure construction and promote Indonesia’s economic growth. The two countries proposed future cooperation in areas such as electricity, Internet communication and education infrastructure