This paper takes the data of listed companies from 2014 to 2016, by controlling the size, age and financial leverage to study the relationship between corporate social responsibility (CSR) and corporate financial performance (CFP).Then this paper introduces the ownership structure as an intermediary variable to explore it on CSR and CFP. The study finds that fulfilling social responsibility can improve the performance of the company, and the appropriate increase in the proportion of large shareholders can strengthen the positive effect of CSR on CFP. Therefore, the reasonable ownership structure can promote corporate social responsibility, then enhance the financial performance of listed companies.