Small mammals were trapped in altitude range of 2 500-4 500 m in Shangrila from June to July 2011 to analyzed the spatial niche breadth of each species and niche overlap between species. A total of 19 species of 275 small mammal specimen was captured, among them Niviventer confucianus, Apodemus draco, A.latronum, A.chevrieri, Ochotona thibetana, Eothenomys custos, and Rattus nitidus were species that distribute most widely at altitude range, therefore they were dominant species in the small mammal community at local area. The spatial niche overlap between the 19 small mammals varied greatly. The spatial niche of E.miletus, Crocidura attenuata and C.russula vorax completely overlapped, while the special niche of R.nitidus, A.chevrieri, Vernany fulva, Microtus clarkei, Tamiops swinhoei, Dremomys pernyi, Petaurista xanthotis and Soriculus leucops were not overlapped.