Tianjun County, in Tibetan Themchen, is a county of Qinghai Province, China, bordering Gansu Province to the north. It is under the administration of the Haixi Mongol and Tibetan Autonomous Prefecture. The county seat in Xinyuan Town.

Administrative divisions

Tianjun County is divided into 3 towns and 7 townships.

Climate

Economy

The county is served by the Qinghai–Tibet Railway; its Tianjun railway station is located near the county seat, Xinyuan Town. Large coalfields are worked near Muli Town in the northern part of the county, at the elevation around 4,000 m above the sea level. The Muli coal fields are connected with the Ha'ergai railway station on the Qinghai–Tibet Railway by a 195 km long branch railway, whose two sections are known as the Tsaidar Railway (柴达尔铁路) and the Tsaidar-Muli Railway (柴木铁路).