Studies on habitat requirements are essential for efficient management actions.However,detailed information is still scarce for Niviventer confucianus and Apodemus draco in the Hengduan Mountains on their habitat requirements.During April-December 2008,we conducted a field survey to uncover their habitat use and separation through transect lines and plot sampling in Fengtongzhai Nature Reserve,China,where they are common and sympatric.The results indicated that both mammals exhibited an obvious habitat preference across seasons.Variables closely relating to food availability and predation risks contributed more to discriminating habitat plots from control ones,implying that the two factors played an important role in shaping their habitat selection.In addition,both mammals exhibited a distinct habitat use pattern from each other,and some variables,such as elevation,contributed more to their habitat separation across seasons,which can potentially reduce interspecific competition and further facilitate their sympatric coexistence.