The collapse of the second Pahlavi regime has been examined from various outlooks and within the framework of various theories. Among the approaches in this regard, is the relationship between the development process in this period and the collapse of this government. Renovation and modernization influenced by western patterns and its reliance on Mohammad Reza Shah Pahlavi's policy of the 1960s and later, raised the increasing concern of groups and strata of the defender of Islamic culture and tradition. Iran, as a developing country, was considered a Rentier state with a single-product economy, especially after the coup of August 19, 1953. This has led the collector state to pay attention to unrealistic mechanisms, regardless of the interests of the other classes stayed above them. Along with the introduction of oil and oil management, the collector state in Iran, for getting the needed support and functional legitimacy, begun to classify, especially the middle class, from It has not been financially independent. This process has prevented the classes from having right and could not challenge the state. Therefore, the present paper's question is: What role has the rentier state played in the emergence, expansion and construction of the new middle class? The nature of the collector state is such that does not count on the society as a significant weight because the government by getting rents from abroad, does not feel any need to other sources (taxes, duties, etc. ). This will give the government a monopoly power and do not sense the requirement to the participations of various groups and classes in power.