Among the most important goals that every economy pursues is the issue of economic growth, and the reason for that is the benefits that economic growth has, but the main issue in examining economic growth is the factors that influence it. In recent decades, the importance and role of life expectancy, government educational expenses, and consumption expenses of households and companies in the economic growth of countries has been noticed by economists. In most of the studies, the effect of each of the economic factors affecting economic growth is examined separately. has been The purpose of this research is to investigate the relationship between life expectancy variables and educational expenses and consumption expenses simultaneously on Iran's economic growth using the ordinary least squares (OLS) method during the period of 1359 to 2018. The results obtained from the estimation of the regression model show that the life expectancy variable has a negative and significant effect on Iran's economic growth by 1.05 units, and each of the variables of the government's educational expenditures and the consumption expenditures of households and companies have 0.18 units respectively. 0.66 units have had a positive and significant impact on Iran's economic growth.