This study deals with Islamc influence in the court and government of the Mogol Empire from the time of Oktay khan and Kyok. This Islamic role has increased in the times of Mnko khan and Qublay khan. During their reigns, Muslims dominated the senior administrative positions in the state and the focal administrations. The study also handles the administrative role of Muslims in the court and the government of Jaghtay Mogol in the country beyond the river, Qaghgaq in the southern Russia and the Ilkhayyns in Iraq and Iran, and the great impact of those Muslims on their Khanates. Finally, most of the khanates and their peoples be came Muslims.