It is certainly not normal for a baby to have a fever of 38°C for 3 days after birth. If it is indeed a fever that causes the temperature to rise, the child should first be hospitalized for a specific examination to clarify the cause of the fever for targeted treatment. For example, fever caused by infection also needs to be hospitalized, and appropriate antibiotics or antiviral drugs need to be selected for treatment according to the type of infection. But children don’t always have a fever to have an elevated body temperature. Children are small and have a very weak thermoregulatory ability, so if their surroundings are too warm or if they are overdressed, this can cause an elevated body temperature, so an elevated body temperature is not always a case of infection. If such a condition does exist, you need to lower the ambient temperature slightly and give your child less clothes or less blankets. If the body temperature drops, it is often due to an increase in the ambient temperature that causes the child’s temperature to rise, so pay attention to monitoring the body temperature.