【摘要】 本文基于数字经济理论，诠释数字经济的内涵与特征，并在深入分析我国数字经济发展现状及特色的基础上，从发展与应用水平、效益与规模、技术创新能力3个维度构建我国数字经济发展水平测度项目体系，计算2016—2020年我国30座重点城市的数字经济指数，从而呈现出30座重点城市数字经济发展差异，以及我国当前数字经济发展的平均水平。继而，利用SAR模型进行驱动要素分析，得出经济增长水平、外商投资占比、政府投资占比、人力资本水平和居民收入水平等要素对我国数字经济的发展有积极的推动作用。目前，我国数字经济发展水平虽处于快速攀升阶段，但东部沿海发达地区与西部欠发达地区仍然存在较大的数字技术鸿沟。若要社会经济全面数字化进程持续发展，并让发展水平更为均衡，还需继续推进数字技术基础设施建设，加大开放力度，吸收先进经验与理念，并因地制宜地实行地区差异化政策，完善数字经济治理手段。更多还原

【Abstract】 Digital economy, a new economic form brought about by economic globalization, is promoting the emergence of a number of emerging industries and business models, and has gradually become an important engine to facilitate the current and future industrial structure transformation and the high-level economic development. An in-depth study of the digital economy is of great significance to China and also serves as a necessary strategic choice.However, research is relatively lacking in terms of measuring the development level of China’s regional digital economy, analyzing the sources of differences and proposing improvement strategies based on the development characteristics of China’s digital economy and the specific regional development status. By referring to the Statistical Classification of Digital Economy and Its Core Industries(2021), this paper takes the data from China Statistical Yearbook issues in 2016—2020 as the basis, and constructs a digital economy development measurement project system from three dimensions of development and application level, benefit and scale, and technological innovation capability.It measures the regional digital economy development index represented by four municipalities and 26 provincial capital cities by means of the principal component analysis, and ranks the values of the above 30 regions. It is concluded that the development of digital economy is high in the east and low in the west. Specifically, the development level of digital economy in the developed coastal areas in the east is relatively high, and it has siphon effect on other regions, making more and more digital resources flow into it, which is highly consistent with the current macroeconomic development trend in China. However, this is not enough to become an obstacle that cannot be crossed by other regions. Further SAR model analysis shows that there is also a space driving effect in the development of digital economy: the digital economy in the western underdeveloped areas can develop passively under the influence of neighboring areas. Therefore, on the basis of improving Internet infrastructure, strengthening the proportion of foreign investment and government investment, and raising the level of residents’ wages, it is necessary to explore a set of regional linkage strategies that are in line with China’s characteristics, implement multi industry integration, narrow the regional gap in terms of development, and improve the overall level of China’s digital economy.Different from previous literature, this paper, from the perspective of 30 cities, analyzes the regional digital economy development level represented by them through the ranking of the urban digital economy development index. It puts forward two innovative suggestions as follows. Domestically, it is necessary to implement differentiation policies according to local conditions, and smoothly implement the staged development strategy of digital economy with Chinese characteristics,the east leads the rise of the central region, and the central region drives the development of the west.Internationally, it is necessary to increase openness, actively facilitate the Internet integration construction of countries along the Belt and Road, vigorously develop Internet basic education, invest more in digital education, and promote the sharing of international digital talents and resources. This paper gives some suggestions on how to consolidate the foundation of China’s digital economy and improve the quality of national digital life. Meanwhile, it provides a theoretical reference for relevant departments to explore the development of digital economy in the future and drive the development experience of digital economy with Chinese characteristics to go global.更多还原