There is a certain range of body temperature for children, and it is considered a fever when it exceeds a certain range. The basal body temperature for children is 36°C to 37°C, and it is generally considered to be a fever when the axillary temperature exceeds 37.3°C. It should be noted that the body temperature mentioned here is the axillary temperature, the anal temperature and oral temperature will be higher than the axillary temperature, which is generally not used due to the inconvenience of measurement. Measuring body temperature requires attention to the following aspects: 1, body temperature can have a fluctuation range of 1 ℃ throughout the day, in the afternoon, eating, exercise and other circumstances will rise, so you should measure the temperature of the baby in a quiet state, pay attention to the ambient temperature, do not hold the baby to measure, and do not test just after the activity, do not overdress the baby when measuring the temperature. 2. If you choose the armpit area, you should make sure that there are no thermogenic or cooling items and dry the sweat before measuring. Although the value of the temperature can reflect the fever, but does not reflect the severity of the disease, but also need to be combined with the systemic condition of the comprehensive judgment.