Body temperature of 35℃ is hypothermia, you should pay attention to observe whether there are other symptoms in your body, and consult respiratory medicine for treatment if necessary. The temperature of the oral cavity of an ordinary person is between 36.3℃-37.2℃, the axillary temperature is 0.3℃-0.6℃ lower than the oral temperature, and the rectal temperature is 0.2℃-0.5℃ higher than the oral temperature. Even if 35°C is obtained for the axillary measurement, it is already below the normal standard. When the body temperature is below the normal range, it is commonly due to excessive heat loss, mostly due to insufficient warmth. Another common cause is insufficient heat production, where the patient has uncontrollable shivering, ataxia, shallow and slow breathing, hypotension, bradycardia, abdominal distention, blood concentration, and impaired thyroid function, which require prompt treatment. In case of occasional body temperature of 35°C with physical discomfort that is not relieved by warmth, the cause needs to be identified by a doctor as soon as possible.