Based on the relevant data of 31 provinces in China from 2010 to 2019, the entropy method is used to comprehensively estimate the digital economy in each province, and dynamic and static analysis of digital economy is conducted based on cluster analysis method. It is found that the level of digital economy development in China's provinces is unbalanced. Shanghai and Beijing are in the leading position in China's digital economy development. The developed regions are mainly concentrated in the eastern region, while the middle and backward regions are mostly in the central and western regions. The gap between the digital economy level in developed and middle regions and that in leading regions is gradually narrowing, while the digital economy in backward regions develops slowly and the gap tends to expand. In terms of weight, digital industrialization has the greatest impact on China's digital economy, while digital infrastructure has a smaller impact.