Today, corporate social responsibility reporting is a very important phenomenon. Although social responsibility reports aim to address the broader concerns of stakeholders in a variety of environmental, social and economic dimensions. But according to research, the performance of social responsibility in companies affiliated with the business group often differs from independent companies. Accordingly, in this study, the impact of business groups on social responsibility has been investigated. In this study, 118 companies listed on the Tehran Stock Exchange in the period 1391-1391 have been studied. To test the hypotheses, panel regression models were used. The research findings show that companies affiliated with business groups have a negative and significant effect on social responsibility performance. But companies affiliated with business groups do not have a significant impact on the performance of social responsibility in state-owned companies.