Summer normal human body temperature range is generally 36 ~ 37 ℃, can be affected by the measurement site, the armpit temperature is normally 36 ~ 37 ℃, the oral temperature is normally 36.3 ~ 37.2 ℃, the anal temperature is normally 36.5 ~ 37.7 ℃, but fluctuations do not exceed 1 ℃. People are thermostatic animals, will not occur with changes in external temperature and body temperature fluctuations. Normal people need to rest for about 30 minutes, remove hot and cold objects around them, and then take temperature measurements. The thermometer needs to be shaken down to below 35℃ before measurement. For axillary temperature measurement, sweat needs to be dried. Oral measurement is not recommended for patients with impaired consciousness. Clinically, if the oral method is used as the standard, reaching 37.3℃ is considered fever. Usually axillary measurement is the most common way to measure body temperature in adults.