The expansion of women's presence in social scenes today has even reached high-ranking political officials. In the corporate scene, there is a debate about how effective the presence of women in the board of directors is on its management. This research was carried out in a quantitative-inductive way and its purpose is to investigate the effect of the presence of women on the board of directors of companies listed in the Tehran Stock Exchange on the cost of ownership rights and then to study the role of information asymmetry moderator on it. 150 companies were selected from among the mentioned society that were active between 1395-1401, which ended in 1050 years of observation. While trusting the research models at a level above 99%, none of the research hypotheses were confirmed. The result is that due to the strictness of the audit of the stock exchange organization on the membership of the companies, the financial statements have been standardized, as a result of which, information asymmetry and the cost of ownership rights have reached their minimum and have become independent from the composition of the board of directors. In fact, the board of directors has very limited authority to influence the mentioned variables and therefore the presence of women cannot help them.