A supplement investigation was conducted on the mammals in Chagangliang Nature Reserve using line transect method and survey method during the period from October to Decembe,2014.The fauna characteristics of mammals in the area were researched based on the investigation and relevant data.A total of 60 species from 23 families and 8 orders were recorded,including 20 species which were listed on the State Key Protection List.Among them,the dominant groups are Rodentia(20 species)and Carnivora(19 species). According to the type of mammal fauna,22 species belong to the Palearetie realm,23 species to the orienial realm and 15 species to the both realms.These results show that Chagangliang Nature Reserve has richmammal diversity and the characteristics of transitional region from the oriental to Palaearctic realm.