Following the announcement of the week of unity by the founder of Islamic Revolution Imam Khomeini (RA) and based on the strategy of the Islamic Republic of Iran in strengthening unity among Muslims, it was decided to hold the International Islamic Unity Conference, which was taken by the authorities and officials. Since 1990, Islamic Advertisement Organization was in charge of holding four of the conference, but after the establishment of the World Forum for Proximity of Islamic Schools of Thought by the order of the Supreme Leader Ayatollah Khamenei, this Forum became responsible about the mission of holding this important conference.

The purpose of the International Islamic Unity Conference is creating unity and solidarity among Muslims, developing consensus among scholars and scientists to approximate their scientific and cultural viewpoints and presenting practical solutions in order to reach the Islamic Unity and Unified Islamic Ummah in the Islamic World and solving the problems of Muslims and presenting solutions for them.

Conference guests are chosen from amongst the elites and educated figures, the ministers of Muslim countries, scholars and muftis, university professors and other academic and cultural communities inside and outside the country. Hundreds of thinkers, scholars and reformers from around the world and thousands of Shia and Sunni scholars from different parts of Iran have participated in the conference and presented their lectures and comments. Also Islamic thinkers from many different countries such as France, Syria, Lebanon, Australia, Egypt, Malaysia, Sudan, Pakistan, India, Azerbaijan, the UK, Jordan, Iraq, Indonesia, Gambia, Palestine, Afghanistan, Senegal, Libya, Bahrain, Algeria, Yemen, Greece, Turkey, Uganda, Kuwait, Qatar, the Netherlands, the United Arabic Emirates etc. have participated in the International Islamic Unity Conferences.