The Nyalam Mountain Vole is known from Nyalam County in southern Xizang, China. Its original description records grayish fur washed with pale yellow, a lighter underside, and two valley sites with spruce forest and bamboo shrub.
The holotype and paratypes were described with grayish pelage washed with pale yellow. The underside was lighter than the back, with a gradual transition; the hairs were fine and long, and guard hairs were absent.
The original description records two sites in Nyalam County. The type locality had secondary coniferous forest with spruce and bamboo shrub beneath the canopy; the other site was bamboo shrub in a valley. Burrows were usually dug under rocks and among bamboo.
An extinction-risk assessment has not been added yet.