Political parties were created in Iran after its political reconstruction. In the twenty century, the creation and growth of political parties in Iran became the main feature of country's political modernization. Modernization that continued throughout this period affected the economic infrastructure but not the monarchical political structure. In this situation the role of political parties and their durability in the Iranian society faced more ups and downs. Appearance of the political parties and their proper behavior in political scene in Iran had good effects on social maturity and cultural expansion. Because the first priority in Iranian society was the drastic change in government structure and in such case the people and society got changed automatically. The development of political participation and emergence of parties required some basic changes in the traditional society, including the appearance of new social groups, the development of public opinion, and other processes related to social and economic renovation. These changes could initiate the condition for the development of parties and political participation.