Body temperature is necessary for the body to carry out normal life activities and metabolism of the body, specifically the internal body temperature of the human body, the normal human axillary temperature is 36-37℃, which is 0.2-0.4℃ lower than the oral temperature, and the anal temperature is 0.3-0.5℃ higher than the oral temperature. 36.1℃, if not specifically referred to, generally refers to the axillary temperature, 36.1℃ is between 36-37℃. Therefore, it can be considered as normal body temperature, and the axillary temperature is usually used clinically to represent the human body temperature. The body temperature fluctuates throughout the day, with the lowest temperature at 2-6 in the morning and the highest temperature at 1-6 at noon, and generally the temperature does not fluctuate by more than 1℃ during the day, which is considered as normal body temperature.