One of the most important tasks of governments in the past century had been the realization of social security; in such a way that the duties of the government in fulfilling social security have become a matter of course. Nevertheless, the limits of the government's intervention in fulfilling social security has been one of the fundamental challenges of policy making, and several theories have been proposed in this regard, and one of them is regulatory state. The purpose of the present research is to examine the limits of the government's intervention in the social security system in Iran. Although the government's intervention in social security has been examined through several theories; But this issue has not yet been examined from the perspective of the regulatory state theory. Social security is one of the most important tasks of the state in terms of the scope, size and number of people covered. Therefore, the study of issues related to social security is not only of great importance, but also necessary for the expansion, development, expansion and realization of social justice. Although government intervention in social security is taken for granted, the question arises here as to how the limits of government intervention in Iran's social security system can be explained in the light of regulatory state theory.