Red knobby newt(Tylototriton shanjing) is listed as categrory Ⅱ of national key protected animals.Body temperatures and metabolic rates of the Red Knobby Newt were measured at different ambient temperatures.Results showed that there was a significantly positive correlation between body temperature(T_b) and ambient temperature(T_a),and the linear regression equation is T_b=3.99 0.86T_a(R²=0.99,P < 0.01);within the range of ambient temperatures from 15℃ to 30℃,metabolic rate increased with ambient temperature;Metabolic rate decreased dramatically at 35℃ or higher;Within the range of ambient temperatures from 15℃ to 35℃,regression equations for males and females were MR₁=0.374 1-0.355 1T_a 0.113 9T_a²-0.010 5T³_a(R²=0.47,P < 0.01,df₁=3,df₂=46) and MR₂=0.478 8-0.420 3T_a 0.130 4T²_a-0.011 8 T³_a(R²=0.40,P < 0.01,df₁=3,df₂=46),respectively.The metabolic characteristics of red knobby newts were different from that of the endothermic animals.Their thermoregulation showed that the ambient temperaturehas significantly influenced body temperature,and the capability of the body temperature regulation is feebleness,which are typical of ectotherms.