The purpose of this study is to investigate the relationship between the term of office of the CEO and the value of surplus cash of companies listed on the Tehran Stock Exchange. The present research is an applied research booklet in terms of purpose. It is a review booklet in nature. In terms of the nature of the research data, the research booklet is quantitative. The statistical population of the present study is the companies listed on the Tehran Stock Exchange. After removing the restrictions, 147 companies were selected as a statistical sample. The period under study is between the years 1394 to 1399. The results of testing the first main hypothesis indicate that there is a negative and significant relationship between the term of office of the CEO and the value of excess cash. In other words, with the increase of the CEO's tenure, the value of the excess cash decreases.