The normal value of oral temperature is 36.2-37.2°C, and the oral temperature is 0.2-0.4°C higher than the axillary temperature. Oral temperature is measured by first shaking the mercury column of the sterilized thermometer to below 35℃, then placing the mercury end under the tongue of the examinee, closing the lips tightly, and leaving it for five minutes to take out the reading. When taking the temperature, please note that if you have just consumed hot water or ice water, do not take the measurement right away, because this will make the measured value inaccurate. When taking the temperature, please note that the lips should be closed tightly, do not talk or eat, oral thermometry is suitable for conscious adults, not for children or patients with consciousness disorders.