With a total length of 1,553 meters, Lanxin Railway Tunnel is a double-line tunnel. It is located between Zhongjia Village and Shangbaihu Village, Minhe County, Qinghai Province. It runs through the loess tableland and Liang area on the right bank of the Huangshui River. The ground elevation is 1,885 ~ 2,140 meters. The project was constructed by the China Railway 18th Bureau. It Uses the double-line lining machine for construction.