The body temperature at night is 37.1°C. If the temperature is in the armpit, this temperature is within the normal range. The human body temperature measurement location are oral, axillary and rectal, the armpit is the most commonly used location to measure body temperature, because it is hygienic and convenient, but also relatively safe. The most common way to measure the axillary temperature is to use a thermometer, of course, you can use mercury, you can also use electronic to measure, through the measurement, the temperature under the armpit should be between 36-37.3 ℃, as long as within this range, are normal, obviously 37.1 ℃ is within this range, so this body temperature should be normal. Of course, it is also necessary to do the standard operation when measuring the temperature, such as to wipe the sweat under the armpit, in addition, the thermometer must be kept under the armpit for more than five minutes, so that the temperature is relatively accurate, so that the value is credible.