It is generally normal for a four-year-old child’s body temperature to remain at 37.2 degrees for several days, and the normal axillary body temperature for children is usually 36.2 to 37.3 degrees. Because of the rapid growth and development of four-year-olds, their metabolism is vigorous, their respiration and heart rate are faster, and they produce more heat, the basal body temperature of small children is usually higher. However, if the child’s temperature exceeds 37.5 degrees, it is considered a low fever, and if it exceeds 39 degrees, it is considered a high fever, and parents need to take their children to the hospital immediately for fever reduction and to identify the cause of the illness. Four-year-old children with a basal body temperature of 37.2 degrees, parents do not need to worry too much, as long as the child’s appetite is good, good mental condition, there is generally no obvious abnormalities. If the baby has other physical discomfort parents can take the child to the hospital to avoid delaying the baby’s condition.