Abstract: After the war of to expel the Zungars and defend Tibet from 1718 to 1719, the Qing government established direct rule in Tibet. After 1720, the administrative system that the Qing government set up in Tibet can be divided into three stages: (1)1720-1727, the integration of religions and politics under the Dalai Lama and Gaxia; (2)1728-1751, the separation of religion and politics, with the Tibetan King-Gaxia, under the supervision of the Minister to Tibet; (3)1751-1911, resumed integration of religion and politics, with the Dalai and Panchen Lamas and Gaxia, supervised by the Minister to Tibet.