In this article, with putting stress upon theoretical bases of growth model, the identification of effective factors impacting economic growth has been studied. To attain the objective of the study, emphasizing time series data and large industrial workplaces of the country, the production function and growth model in the macro scale as well as production function in the industry sector have been estimated. The results show that research and education capital stock in all estimated models in macro scale are from among the important economic growth factors in Iran. Also, in the industry sector education, research and physical capital have played an effective role in the growth of the sector. However, what is important is the acceptance of human, research and physical capital in every estimated model as well as precedence of the human and research capital to physical capital the models.