The current international financial system based on US dollar is an important reason for some global economic problems. The internationalization of RMB on one hand provides a solution for the above issues; on the other hand also it also meets the aspirations of China's sustainable economic development. In politics, the internationalization of the RMB will help to form the incentive structure of the reform and opening-up of the domestic financial system and reduce the resistance of the domestic financial market reform. The combination of Belt & Road Initiative and the internationalization of the RMB will continue to increase overseas demand for RMB, which plays a role in supporting the RMB exchange rate. However, the internationalization of RMB is a complex process; China will not only need to adapt to macroeconomic policies, but also need domestic financial system reform. In short, the RMB internationalization still has a long way to go.