The identification and mitigation of corporate greenwashing are crucial elements in building a green market and achieving sustainable development. In the context of synergistic development of digitization and greening， the continuous iteration and deepening of digital technology provide important assistance for the corporate green development. However， the influence mechanism of digital transformation on corporate greenwashing is still unclear. Based on the dynamic capability theory and digitalization literature， it examined the impact of digital transformation on corporate greenwashing using data of Chinese A-share listed companies from 2015 to 2022. The two dimensions of media environment， media attention and media sentiment， were also included in the research framework. The results indicate that digital transformation significantly inhibits corporate greenwashing. Media attention strengthens the inhibitory effect of digital transformation on corporate greenwashing， while positive media sentiment weakens both this inhibitory effect and the moderating effect of media attention. Further analysis reveals that there are differences in the effectiveness of different types of media. Policy-oriented media only exhibits a moderating effect through media attention， while market-oriented media has no significant change in its moderating effect. It enriches the research on antecedent factors of corporate greenwashing from the perspective of new technologies， offers relevant empirical evidence and decision-making references for corporate greenwashing governance， and provides theoretical guidance and policy recommendations for regulating corporate behavior and building green markets.