Body temperature is measured differently in summer. Oral temperature is 36.3~37.2℃, rectal temperature is 36.5~37.7℃, and axillary temperature is 36.0~37.0℃. Usually the temperature of the human body is mainly measured through the oral cavity, rectum and armpit, and the rectal temperature is the closest to the deep body temperature of the human body. Generally the human body’s oral sublingual temperature is between 36.3 and 37.2 degrees Celsius, rectal temperature is between 36.5 and 37.7 degrees Celsius, and axillary temperature is between 36.0 and 37.0 degrees Celsius. As the body temperature will be regulated by the thermoregulation center, and then through the mechanism of heat dissipation and heat dissipation, in order to achieve a dynamic state of equilibrium. Therefore, no matter how the temperature of the external environment changes, the body temperature will be maintained in a relatively stable state.