Functions of the council institution in the Islamic Republic of Iran's legal system

The council institution was established in various structures of the three branches of Iran's constitution and specific institutions such as the National Security Council and the Expediency Council. This shows the high importance of this institution for the legislative power. In discussion of the council’s functions, it is understood that this institution cannot be limited to one function (regulatory or advisory). Council has all legislative, regulatory and advisory functions in the legal system of the Islamic Republic of Iran regarding its situations. So in this paper, to prove the mixed function of council institution, after defining the council concept, its legislative, regulatory and advisory functions are examined in laws and regulations and Islamic Republic of Iran.