There were different sole and combined forms of government that established and continued in the course of history of human societies. For their differences in basis and sources of legitimacy, two of these forms; democracy and theocracy, have entered into a severe confrontation with each other in both domestic politics and international relations first in the Europe’s Middle Ages then now in our time and each attempts hard to deny the other’s legitimacy and prepares the ground for its collapse. Because of a long history of Iranian Muslim’s struggle against imperialism and despotism and people’s keen and entrancement for the establishment of a government based on God’s teachings in post Islamic Revolution, there established a combined form of both theocracy and democracy and this combination asserted explicitly in the Constitution of the Islamic Republic of Iran. This combination, being not unprecedented, has plenty of examples in the old and contemporary history of Muslims and other religious followers and also were of necessary and enough stability. People hit off in one school of thought and constitute the participating majority of their society too, collectively insist on implementation of Heavenly guidelines in the private and social life of their community and seek a concrete supervision on this matter.