Taking Chinese A-share listed companies from 2013 to 2021 as research sample, this paper regards the establishment of data exchanges as a quasi-natural experiment, and combines with the staggered DID model to empirically explores the impact of data element allocation on audit fees of regional enterpries. It finds that: (1) The data elements allocation characterized by the establishment of data exchange reduces the audit pricing of regional enterprises. And this conclusion holds true even after endogeneity and robustness tests. (2) At present stage, data elements allocation inhibits audit fees by reducing audit resource input and alleviating audit risk perception. (3) The effect of data element allocation on reducing enterprise audit fees exhibits heterogeneity. Specifically, state-owned enterprises, high-tech enterprises, and enterprises with a higher degree of digital transformation tend to weaken the effect of data element allocation on reducing enterprise audit fees. This study verifies the important role of marketization of data elements in alleviating the micro enterprise operating costs, and provides an empirical reference for further deepening the reform of data elements to enable high-quality development of enterprises.