Digital economy and green economy is the main driving force to promote the high-quality and sustainable development of China 's economy. Taking the Yangtze River Economic Belt as an example, based on the provincial panel data from 2012 to 2022, the development level of digital economy and green economy is measured, and the coupling coordination degree model, Moran index and Gini coefficient are used to measure the coordinated development level, spatial correlation, and regional differences of the two. It is found that the digital economy and green economy development in various regions of the Yangtze River Economic Belt achieved excellent results, and the coupling and coordination degree of the two systems increased year by year, ushered in a good situation of coordinated development.In the early stage, the coordinated development level of digital economy and green economy in the Yangtze River Economic Zone showed the characteristics of “strong in the east, weak in the west and the east ". With the passage of time, the coordinated development level of the eastern region weakened, but the development advantages of digital economy and green economy were obvious. The coordinated development of digital economy and green economy in the Yangtze River Economic Zone has a "spillover effect", and the two can empower each other and interact with each other benignly.