Borrowing commitments, especially in the case of private debt (such as borrowing from banks), help reduce representation problems caused by free cash flows and information asymmetries. The issue of women's management has always attracted the attention of psychologists, sociologists and management experts, and each of them has somehow rooted out this issue. Commitment to work when taking responsibility, great motivation to do things well, a sense of competition in the workplace compared to their peers (male managers), more presence in supervisory committees and other personality and work characteristics of a female manager have significant effects on financial decisions in the board It has companies and organizations and will also improve the company's performance, increase shareholder satisfaction and increase company returns. Therefore, the purpose of this study is to investigate the effect of gender diversity of the board of directors on the debt cost of insurance companies in the Tehran Stock Exchange during the years 1393 to 1397 with a sample of 15 companies. To test the hypothesis, multivariate linear regression and hybrid data were used using the generalized least squares model. The results of testing the hypotheses showed that the gender diversity of the board does not have a significant effect on the debt cost of insurance companies.