Adult body temperature at 34.5℃ is not normal because the normal human axillary body temperature should be 36.0-37.3℃, lower than 36.0℃ or higher than 37.3℃ is not normal. Hypothermia lower than 36.0℃, to exclude hypothermia caused by irregular practices when taking temperature, as follows: 1. When taking temperature should let the patient in the early morning, fasting, awake state. 2. When taking temperature should also let the patient’s armpit stay dry, so as not to affect the temperature degree due to sweat evaporation. 3. When taking temperature should let the thermometer contact with the body for at least 10 minutes, so that the temperature is accurate Body temperature. If the temperature is still low after all of the above, you should go to the hospital for a relevant examination.