Sweating on the forehead or temples can have an effect on the temperature measurement and can cause the two areas to measure different temperatures. Temperature measurements on the forehead and temples are subject to a number of interfering factors and are relatively inaccurate. It is generally recommended to measure the axillary temperature. The skin layer of the forehead and temples is thin, and high room temperature or sunlight will cause its temperature to rise significantly; if the amount of sweating is high, its temperature will also drop significantly, and the temperature of the two areas is subject to many interfering factors, and the measurement results will also be inconsistent. Therefore, if possible, it is recommended to use a mercury thermometer to measure the temperature of the armpits, which is relatively less affected by room temperature, air flow, sun exposure and sweating, and the body temperature is more stable than that of the forehead and temples.