This paper focuses on the reform of accounting standards in China in 2007 and investigates its impact on equilibrium pricing in the audit market. We find that the concentration of the audit market and the probability of issuing modified audit opinions do not significantly change, but that audit fees increase significantly after the adoption of the new accounting standards in China. Deeper analysis suggests that(1) the implementation of the new IFRS-based Chinese Accounting Standards(CASs) has increased the market risk faced by listed firms and thus auditors’ expected audit risk, causing an increase in audit fees,and(2) the degree of the increase in audit fees is positively related to the adjusted difference between net income according to the old CAS before2007 and the new CAS after 2007. We thus conclude that the reform has had a significant impact on audit pricing in China. This paper focuses on the reform of accounting standards in China in 2007 and investigates its impact on equilibrium pricing in the audit market. We find that the concentration of the audit market and the probability of issuing modified audit signals do not significant change, but that audit fees increase significantly after the adoption of the new accounting standards in China. Deeper analysis suggests that (1) the implementation of the new IFRS-based Chinese Accounting Standards (CASs) have increased the market risk faced by listed firms and thus auditors’ expected audit risk, causing an increase in audit fees, and (2) the degree of the increase in audit fees is positively related to the adjusted difference between net income according to the old CAS before 2007 and the new CAS after 2007. has had a significant impact on audit pricing in China.