Apodemus chevrieri is an exotic species inhabiting Hengduan Mountains.In order to study its adaptive energy strategies under low temperature of the wood mice,we measured energy budge,BMR and NST during cold exposure for 28 days.During cold exposure,its body mass and temperature decreased gradually,while energy intake,digested energy and metabolizable energy intake increased gradually and achieved the highest value after 21 days.BMR and NST increased and reached to 187.19%,155.97% respectively of the control after 28 days.The ratio of(NST-BMR)/BMR was 1.02 after 7 days and then dropped to 0.53 in 21 days,and then kept at a steady level.During cold exposure,A.chevrieri reduced its body mass and temperature,and increased energy intake,digested energy,assimilated energy and thermogenesis properties of BMR and NST in order to maintain the balance of energy metabolism.In the early stage of the cold acclimation,the NST was dominant in the thermogenesis,but as the time continued further,it reduced.It was possible that the pattern of the energy budge in A.chevrieri during cold acclimation is also the character of other rodents inhabiting Hengduan Mountains.