Normal body temperature is 37.5 ℃ due to the different parts of the measurement, whether normal can not be generalized. If it is measured in the mouth, armpit belongs to the abnormal situation, if it is measured in the rectum, belongs to the normal body temperature. The body temperature of a healthy person is relatively constant, and when it exceeds the maximum limit of normal body temperature it can be called fever. It is not possible to generalize whether it is normal to measure a body temperature of 37.5°C due to the variability of the site of measurement. Frequently measured sites are the oral cavity, axilla, rectum, the normal temperature of the oral cavity is 36.3 ~ 37.2 ℃, the axilla is 36.0 ~ 37.0 ℃, rectum is 36.5 ~ 37.7 ℃. If the patient is oral and axillary measurements of 37.5 ℃, it is a case of fever. If the rectal temperature is 37.5°C, it is within the normal temperature range and there is no need to worry. If the patient has a fever, he should go to a regular hospital to find out the cause of the disease. Once diagnosed, patients need to actively cooperate with doctors to take relevant treatment measures.