This research takes 285 prefecture-level and above cities in China's mainland as the research areas,measures the development level of digital economy by the means of panel data entropy method,analyzes its temporal and spatial evolution characteristics based on the GIS spatial analysis,and explores the driving mechanism of regional scientific and technological innovation level for the development of digital economy through panel quantile regression. The result shows that:1) From 2011 to 2018,the development level of digital economy has steadily improved in the Mainland of China,and regional differences have narrowed. This is generally reflected in the uneven spatial distribution which is higher in the east and the coast areas that in the west and the inland areas,urban agglomerations and central cities occupy a dominant position. At the same time,urban agglomerations,such as Beijing-Tianjin-Hebei,Yangtze River Delta and Pearl River Delta,and the southeastern coastal areas have also become hot spots and sub-hot spots for the development of digital economy. 2) From 2011 to 2018,the gravity center of China's digital economy generally moved to the southwest,and the overall distribution trend shows that the difference between north and south is greater than the difference between east and west. 3) According to the panel quantile regression,results show that the influence of regional scientific and technological innovation level on the development level of the digital economy shows a U-shaped change trend,and its influence first decreases and then rises with the improvement of development level of the urban digital economy,showing a strong positive overall trend enhancement. 4) For different regions,the driving effect of technological innovation on the digital economy shows a certain degree of heterogeneity,although the overall performance is a positive promotion. But there are still differences in the level of technological innovation in different regions in the driving force of different levels of digital economic development.
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