To identify the four geothermal elements of source, channel, cover, and reservoir in the Nyingchi geothermal field in the eastern Himalayan Syntaxis of the Qinghai—Xizang(Tibet) Plateau, writers completed a two- dimensional inversion of two audio- frequency magnetotelluric (AMT) survey lines and proposed two- dimensional resistivity models of the Nyingchi geothermal field. Combining with previous magnetotelluric and seismic results, the following understandings were obtained: (1) There is a low velocity and high conductive body at depths of 10~20 km in the study area, which is formed due to the large scale near east—west distribution and upward extension of the crust. (2) The deep heat source is composed of the crustal melting of low velocity and high conductive body and radioactive heat production. (3) The deep faults in the upper crust are the main channels for the upwelling of hot materials, and the Lulang—Yigong fault and the Jiali—Chayu fault are important thermal conduction channels due to high- pressure shear. (4) A high resistance layer 10 km thick in the upper crust is a cover layer of the deep heat sources, and the shallow Triassic sandstone slate, strong regolith, and the schist dominated by the Zhenba Formation of the Meso—Neoproterozoic Lingzhi Group serve as thermal reservoirs. (5) The atmospheric precipitation and groundwater permeate and circulate along the shallow small fracture to the high- temperature heat storage location, and then form high- temperature water resources.