A temperature of 36.8 in the morning and 37.3 in the afternoon may be normal, or there may be a pathologic factor, such as tuberculosis. Normal human body temperature is generally about 36 ~ 37 ℃, can be slightly different due to different methods of measurement, but also often by the body of internal and external factors fluctuate slightly; such as thermometer improper use of the measurement of body temperature degrees of error, or armpits are not wiped clean resulting in error, or thermometer itself is bad. Treatment: Use the correct measurement method, such as shaking the thermometer to below 35℃ and wiping off sweat before use. Although 37.3℃ in the afternoon is at the threshold of hypothermia, it may be influenced by physiological factors: improper operation, influence after eating, etc. Treatment: correct measurement, multiple measurements, measurement after rest, etc. However, there may also be pathologic factors, such as the clinical manifestation of tuberculosis is a prolonged afternoon low fever, but often accompanied by fatigue, night sweats and other manifestations. After excluding operational and physiological factors, we need to consider disease factors, and recommend timely medical treatment, under the guidance of the doctor to identify the causes and then active treatment.