The issue of change in the formation of the institution of government or state-building in recent decades in the discussion of development has been one of the most challenging issues in political science. According to neo-conservatives, the government as an independent agent has returned to the context of social and political science studies and has been able to play an independent and active role as an active and independent agent in economic and social developments. Therefore, the institution of government is of great importance in the process of development. This article tries to answer the central question of the institutionalist method and using documentary-library sources that despite the fact that more than one hundred years have passed since the existence of the government in Iran, why is the modern government still an "institution" in Iran (especially in The period we are discussing (the Islamic Republic) has not been formed and as a result the government institution does not have the necessary efficiency in development. In response to the above question, the following hypothesis can be raised: The Islamic Revolution of Iran had a flexible beginning with the phenomenon of national government, also the form of national government meaning government mechanisms and structures formed during the Pahlavi period in the Islamic Republic was preserved. Although the nature of the regime in the Islamic Republic had an Islamic identity and governments have legal institutions, but due to the priority of macro goals and aspirations (such as the establishment of a single nation) and the survival of the changing role of oil revenues in Iran's economic and political system, the phenomenon The nation-state has not been completed and the institution of government has been poorly developed.