The purpose of this research is to examine the relationship between profit management and company performance with an emphasis on corporate governance in companies listed on the Tehran Stock Exchange. In the current research, in addition to the ordinary least squares (OLS) method, according to the mentioned goal, 2 hypotheses were proposed, which were analyzed and statistically investigated through the switching regression model. The composite data of the statistical sample of the research are 103 companies accepted in the Tehran stock market, whose data were subjected to statistical analysis for a period of 7 years (from 1387 to 1393). This research uses the switching regression model to investigate the relationship The management of profits and performance of companies in two regimes of strong and weak governance is discussed. The said index consists of four criteria, the size of the board of directors, the duality of the duties of the CEO, institutional ownership and the deviation of the cash flow right from the voting rights of the owners Owners' voting rights were considered as a measure of ownership concentration. Also, to calculate the company's value, the Q-Tobin index and the internal rate of return were used to calculate the profit management using the discretionary accrual criteria, and the modified Jones model was used (OLS method) showed that there is a significant negative relationship between profit management and company performance, in other words, profit management causes a decrease in company performance. The results of the switching model in this research show that in strong corporate governance, shareholders consider profit management opportunistically. is not considered and has a positive effect on the value of the company, in other words, in this governance regime, there is a significant positive relationship between profit management and company performance. But in companies with weak corporate governance, this effect is reduced and there is a significant negative relationship between profit management and company performance.