The body temperature of the human body is different at different times of the day, the morning body temperature is about higher than the afternoon body temperature, generally speaking the axillary body temperature in the morning 36.5, in the afternoon at 37.2 ℃ are within the normal range, but also to observe the usual basal body temperature. If the usual basal body temperature is low, a body temperature of 37.2°C is also high, possibly caused by bacterial or viral infections. In addition to these, we need to see if there are other clinical manifestations, such as coughing, coughing phlegm, sore throat, etc. For young people, the more common causes are acute upper respiratory tract infections. However, if there is repeatedly a high temperature in the afternoon, higher than 37.3℃ for more than 3 days, you need to go to the hospital to improve the blood routine or related tests to clarify, and also need to exclude any other causes such as tuberculosis.