Neonatal erythema, within 1-3 days after birth, is a physiological phenomenon, manifesting as flaky or maculopapular rash-like, the child has no obvious uncomfortable feeling, and does not need any treatment or handling, and it may fade naturally after 1-3 days in general. In addition, if the amount of neonatal erythema is particularly high and the child has an itchy feeling, you can apply a small amount of stove glycolic lotion. If, in addition to neonatal erythema, there are purulent, maculopapular-like things or pustules, consider a possible co-infection and suggest applying medications such as Bactrim for treatment. If there is no obvious discomfort, leave it untreated for now.