The article empirically analyses the impact of Confucian culture on the quality of corporate environmental information disclosure based on a research sample of A-share listed companies from 2010 to 2022. The study shows that Confucian culture significantly enhances the quality of corporate environmental information disclosure, a finding that remains unchanged after a series of robustness tests. The mechanism test finds that Confucian culture enhances the quality of corporate environmental disclosure by promoting corporate responsibility fulfillment, inhibiting agency problems, and enhancing dynamic capabilities, and the above relationship is more pronounced in labour-intensive enterprises, heavily polluting industries, the eighteen provinces of Han and the central and western regions. Further research shows that the green financial system and media attention play alternative and strengthening mechanisms respectively, in the influence of Confucian culture on the quality of corporate environmental information disclosure, and that the provision of high-quality environmental information under the influence of Confucian culture motivates firms to expand environmental protection investment and ultimately achieve green transformation in the two dimensions of both word and deed.