Body temperature at night is about 0.6 degrees Celsius or so higher than in the morning. There is a difference in body temperature between the morning and the evening in various parts of the body, as well as between men and women. The fact that the body temperature is a little higher at night than in the morning is caused by the body’s endocrine laws. In the morning the vagus nerve is mainly excited, when the body’s energy-producing hormones have not yet been released into the bloodstream, the body temperature will be lower. In the evening, the secretion of corticosterone and other energy-producing hormones in the body reaches its peak, and the body temperature will increase. Normal body temperature has a relatively stable range of fluctuations and is not constant. Body temperature is lowest around 5 a.m. and highest around 7 p.m. The temperature difference in body temperature during the day is around 0.6 degrees Celsius. Women’s body temperature is about 0.3 degrees Celsius higher than men’s. If the change in body temperature is more than about 1 ℃, which is not in line with the physiological situation, you should go to the hospital in time to do the relevant examination, to clarify the cause of the disease and then actively treat it.