According to online reports, Li Jiange, former vice chairman of the China Securities Regulatory Commission, wrote that since the 20th century, the US dollar anchor has gone through four important stages of development, from the early gold dollar, to the oil dollar, then to the US debt dollar, and now it is moving towards the digital dollar. On the road to exploration, we should deeply understand the evolution laws of the US dollar anchor and actively adjust our financial strategy. The current overall idea of the United States for building the digital dollar system is to incorporate the digital currency ecosystem that grew barbaric in the past into the compliance supervision system to ensure that the development of the digital currency industry is in line with the national interests of the United States. Every change is a strategic choice for the United States to adapt to the international political and economic situation. For China, it should accelerate the internationalization of the RMB, improve the financial market system, and promote the research and development and application of digital currency.