The center of supervision on mosques affairs with more than two decades old has been the main service center for mosques of Tehran state. It was established cause of need to existence of such center to investigate requirements and needs of mosques as Supreme leader of Iran has commanded. Ayatollah Khamenei (damat barakatuh) as Vali-Faqih granted this responsibility as innate right to authority on mosques to Ayatollah Mahdavi Kani as the trustworthy person to establish and manage this center as its president. The role of grand Islamic scholars in establishment and improvement of this center has been very important as Ayatollah Khamenei (damat barakatuh) said.