The nest-site selection of house sparrow (Passer domesticus) in Fukang Area, Xinjiang, Northwestern China, was investigated during the breeding season. A total of 75 house sparrow nests was found, of which all were built on trees in farmland or forest. Chinese Aspen (Populus adenopoda) and euphrates poplar (P. euphratica) are the most dominant nesting tree species. No nest was found in human structures. The principal component analysis (PCA) suggested that three main factors, including the height of nest, the coverage above the nest and the distance to the road, affected nest-site selection of house sparrow. Furthermore, there were no significant differences between the successful (n=40) and failed (n=20) nests (P > 0.05) in nest-site factors. These suggested that in the study area the nest-site selection of house sparrow has little effect on reproductive success.