Inaccurate temperature measurement when sweating in the armpits, the measured temperature is lower than the actual body temperature, which will lead to misjudgment of the body temperature and affect the assessment of disease, for the following reasons: 1. At this time, the body surface heat will be lowered with the sweat discharge, which can not truly reflect the actual temperature of the body; 2. When there is sweat in the armpits, the thermometer may be slippery, and the armpits are not in good contact with the armpits to affect the heat transfer between the thermometer and the armpits, which will lead to a measurement error. If your armpits are sweaty when you measure your temperature, dry them with a dry towel and measure your temperature after 10 minutes. You should also check the temperature of the thermometer carefully before taking the measurement to prevent errors caused by the thermometer itself.