Babies are prone to diaper rash if their little butt is always in contact with a damp surface. Newborn babies lie down for a long time with diapers pressed on their buttocks and waist. Leak-proof three-dimensional edge guards should be provided on the legs and waist, but they should not be too tight due to leakage. The material of the surface layer of the diaper should also be dry and not re-seeded. It is best to choose a diaper with a multi-layer water-locking structure, that is, adding more anti-fault layers and diversion layers, which can achieve continuous layers, no balls, uniform diversion, and avoid bloating.