Abstract
Under the new development pattern, the rapid development of digital economy is becoming the core force to change the global economic and social structure. At the same time, China is speeding up the conversion of old and new kinetic energy, and how to activate China's dual-innovation vitality is the focus of attention from all walks of life. Based on this, this project, based on the panel data of 285 prefecture-level cities in China from 2011 to 2019, studies the influence of regional digital economic development index on urban innovation vitality through two-way fixed effect model and intermediary effect model. It is found that the digital economy can promote the promotion of urban innovation vitality, and this conclusion is still valid after replacing the robustness test of the explained variables. The further mechanism test shows that the upgrading of industrial structure is an important intermediary variable for the digital economy to enhance the dual-innovation vitality of cities, and the digital economy can promote the dual-innovation vitality of cities through the upgrading of industrial structure.
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