This study uncovers the relationship of company’s Environmental, Social, and Governance (ESG) performance and capital structure in Chinese corporate sector. Additionally, we investigated if audit quality intervenes this ESG—capital structure nexus. Using panel regressions with fixed effects, we chose Chinese A-Listed companies giving 6295 firm-year observations from 2010 to 2019. The results support the legitimacy theory, suggesting that a company's ESG disclosure and overall progress is a crucial factor in determining their financing decisions. The results suggest that firms with better ESG performance found to have less debt financing and easier access to equity capital from stock markets. However, the results did not show a significant impact of audit quality on this relationship. Sensitivity tests, such as alternate parameter estimation measures, techniques to address endogeneity issues (sysGMM), and lagged regressions, were conducted and did not change the key conclusions of the study.