Financial support has played a significant role in advancing high-quality Belt and Road Cooperation. This paper systematically reviews the experience and challenges of financial support for high-quality Belt and Road development. The study finds that, throughout this process, multilateral financial cooperation has deepened steadily, the financial support framework has been progressively strengthened, investment and financing projects have been steadily implemented, and policy banks, commercial banks, and insurance institutions have worked together to forge a multi-tiered financial support pattern. However, the intensification of external geopolitical risks, an increasingly challenging global economic environment, coupled with internal imbalances in financial resource allocation and acute structural development deficits among partner countries, have created dual pressures — both internal and external — for high-quality Belt and Road cooperation. Going forward, efforts should focus on strengthening information sharing and risk assessment, providing differentiated and diversified financial support, innovating financial resource allocation strategies, and building robust multilateral financial coordination mechanisms. These measures will enable more systematic and targeted financial supply, injecting strong momentum into high-quality Belt and Road cooperation.