China’s Belt and Road Initiative is now the world’s largest infrastructure initiative, with long-term climate change effects, and the Green Investment Principles for Belt and Road (GIPs) have been promoted as a key instrument to green the Belt and Road. This article focuses on the question: What role do the GIPs play in building a green Belt and Road and addressing relevant regulatory challenges? Based on the theory of nodal governance, it is argued that the GIPs’ two-layered networks facilitate China to influence investment decisions over many countries along the Belt and Road indirectly through fund providers as key nodes to transition toward green investment. China also avoided direct interference with the domestic policies of host countries through the GIP network. As a framework agreement, the GIPs also provide opportunities for signatories to contribute to the design and negotiation of specific implementation standards, enhanced capacity building, and the prospect of more stringent and prescriptive environmental standards in the future.