Abstract:Improvement of innovation efficiency is a key factor for enterprises to enhance their core competitiveness, and in the era of digital economy, it is of great significance for economic and social high-quality development to empower the innovation efficiency of enterprises through virtual agglomeration. Based on the data of China's Shanghai and Shenzhen A-share listed companies and the cities where they are located, the study empirically analyses the impact mechanism of virtual agglomeration on the innovation efficiency of enterprises, and the results of the study show that the deepening of virtual agglomeration can positively promote the enhancement of the innovation efficiency of enterprises. Virtual agglomeration virtual agglomeration can promote the improvement of enterprise innovation efficiency through the scale effect of management cost reduction and the cooperation effect of technological spillover between enterprises; industry market competition can positively regulate the impact of virtual agglomeration on enterprise innovation efficiency; through heterogeneity analysis, it is found that the enhancement effect of virtual agglomeration on enterprise innovation efficiency is more obvious in the regions with a lower degree of marketisation and in state-owned enterprises. An extended study based on the micro-level of enterprises and the macro-level of government subsidies finds that the context of executive equity incentives, digital transformation and government subsidies is conducive to enhancing the positive impact of virtual agglomeration on enterprise innovation efficiency. The findings broaden the research perspectives in the areas related to virtual agglomeration and corporate innovation, and have important practical implications for corporate governance and innovation efficiency.