Abstract:The coupled and coordinated development of digital economy with the economy is of great significance to the overall development of the region. By constructing an evaluation index system for the comprehensive level of digital economy and economic development, using the coupling coordination degree model and exploratory spatial data analysis methods, the coupling coordination degree and its spatial correlation of digital economy and economic development in 98 cities in the Yangtze River Economic Belt from 2011 to 2018 were analyzed. The research shows that: ① The digital economy and economic development level of the Yangtze River Economic Belt both show an upward trend, and the growth rate of the digital economy level is greater than the economic development level. There are spatial differences between the two, and the overall level of digital economy and economic development in downstream cities is the same. Relatively high, the upper and middle reaches are the opposite. ② The coupling coordination degree of the Yangtze River Economic Belt has shown a steady upward trend, and the overall coupling coordination level has achieved a transition from mild imbalance to primary coordination; there are obvious spatial differences in the coupling coordination degree, showing an overall trend of downstream > midstream > upstream. ③The coupling coordination degree shows positive spatial autocorrelation, but with the passage of time, the spatial autocorrelation weakens; the overall change in the “high-high” agglomeration area of ??the coupling coordination degree is not large, and the “high-low” agglomeration area shows first After expanding and shrinking, the "low-low" agglomeration area maintains a downward trend.