In Qajar era, slaves (ghulaman and kanizan) were from various ethnic groups such as African, Caucasian (Armanian, Georgian and Circassian), Turkman, Afghan, Baluch, Kurd and even Fars.slavery through wars and sudden invasions usually has been the main source of ghulam and Kaniz providence spacialy among Torks and the infidels in Caucasus and beyond. With removing Iran’s sovereignty in Caucasus by the Russians, the import of this group of slaves to Iran decreased severely. instead, import of African slave through south of Iran, very increased. This process in spite of slave trade prohibition treaties and the heavy hand of the British maritime anti-slave patrols in Persian Gulf, continued until the middle of the 14th century. This paper after denotes the centers and sources of supply slaves, has been analyzed and descripted this process in mentioned places.