Abstract:Based on the enterprise survey data of 172 samples, this paper conducts an analysis of the influence mechanism of IT-business alignment on business model innovation from the perspective of data empowerment. Further, the research explores the mediating effect of big data capability in view of the logical framework of resource integration, data mining and analysis, organizational decision-making, and the moderating effect of environmental dynamism on the basis of environmental adaptability of enterprises. The results show that IT-business alignment can positively and significantly influence business model innovation, and the big data capability is a mediator in the relationship between IT-business alignment and business model innovation. The empirical results also show that environmental dynamism has a mediating and moderating effect on the relationship between IT-business alignment and business model innovation. At a high level of environmental dynamism, IT-business alignment has a weak impact on business model innovation, and the moderating effect of environmental dynamism also be realized through the mediation of big data capability. The enlightenment of the research conclusion to the practice of business model innovation includes: enterprises should pay much more attention to infrastructure alignment, process alignment and strategic alignment of IT and business, exert positive influence from the big data capability, and improve monitoring of the external environment.