Environmental innovation is an important way for firms to achieve sustainable development and acquire resources. Based on the stakeholder, resource dependence, and signal transmission theories, this study divided environmental innovation into substantive and strategic eco‐innovation and constructed a relationship model among environmental innovation, advertising expenditures, and corporate financing. Selecting 162 Chinese manufacturing listed companies from 2012 to 2017 as the research sample and adopting the multiple regression analysis method, the study found that substantive eco‐innovation had a positive effect on corporate financing, but strategic eco‐innovation had a significant negative effect on corporate financing. Further, advertising expenditures played a positive moderating role between substantive eco‐innovation, strategic eco‐innovation, and corporate financing. The robustness test further confirmed these results.