The monograph is devoted to the history of the Uyghurs, Naimans, Keraites, Gelairs, etc. In the period from the VIII to XIV centuries. Special attention is paid to the era of the Uyghur Khaganate in Mongolia (745-840), the Uyghur state in East Turkestan, the role of the Uyghurs in the military-political system of the Mongolian state in the XIII-XIV centuries.