Separation of debts is very important in terms of due date of payment, because managers and owners of institutions, knowing about the due date of debts, take action to pay them on time so that they do not lose their credit and business position with other institutions and sellers, and in the future, their facilities and credit facilities are favorable. to use Business strategy emphasizes improving the competitive position of the organization's products in a particular industry or market segment. Business strategy shows how an organization should compete or cooperate in a particular industry. Due to the very high changes in the market and fierce competition between commercial companies, organizations choose the right business strategy for their survival in order to maximize the use of the facilities available in their organization according to the environmental conditions, therefore the purpose of this research is to investigate the effect The business strategy is based on the relationship between risk-taking and debt maturity structure of the companies admitted to the Tehran Stock Exchange. This research was conducted during the years 2014 to 2014 with a sample of 132 companies and multivariable linear regression to test the hypotheses. The results of the findings showed that risk tolerance has a significant effect on the debt maturity structure, but business strategy has a significant effect on the relationship between risk tolerance. And the maturity structure of the debt has no significant effect.