Infant 37℃ does not belong to fever, because the normal body temperature is between 36-37.5℃, and it is regardless of age, so infant 37℃ is within the normal temperature range. It is recommended to measure the axillary temperature for about 5 minutes, and the child should be kept in a quiet state, not crying violently, not just after eating milk or wrapped too tightly in clothes or wearing too thick, there is sweat under the armpit, these measurements are not accurate body temperature. Therefore, before taking the temperature, make sure that there is no sweat under the armpit, and if there is sweat, wipe it off, and it is better to take the temperature twice, so that it will be relatively accurate. If the child is really crying and restless and can not cooperate, you can take the ear temperature, but the ear temperature gun is relatively expensive, parents can choose the right thermometer according to their own situation.