The existing line from Xining to Golmud of Qinghai-Tibet Railway has a total length of 816.5km and 62 stations and lines. There is a single line, the climate environment is bad, the construction standard is low. To this end, the country and the Ministry of Railways decided to build the West Grid to add the second line and a power project. In order to increase its passing capacity and speed as soon as possible, the Ministry of Railways has decided to build the second line of Tuole-River, Wulan-Lianhu, Haoluge-Yinmaxia, Linshan - Golmud East since September 2005, with a design speed of 160km/h and a reserve of 200km/h. In order to improve the standard of the existing line and build the second line.