Can industry information disclosure improve audit quality?

We investigate the impact of industry information disclosure (IID) on audit quality in Chinese listed companies from 2010 to 2021, by constructing a staggered difference-in-differences model based on the implementation of the IID guidelines in the Shanghai and Shenzhen stock exchanges in 2013 as an exogenous shock. Audit quality is significantly improved after the implementation of the IID guidelines. We also use a parallel trend test, different measurements of key variables, propensity score matching, a placebo test and different samples, to ensure the validity of our findings. IID enhances audit quality by improving auditor independence, professionalism and audit engagement, particularly in firms with high-quality and numerous IIDs, high auditor rankings, strong auditor industry expertise, IIDs with a negative tone and low R&D investment. We demonstrate the effectiveness of the IID guidelines from the perspective of auditing.