Neonatal skull unevenness is a normal phenomenon, the neonatal skull unevenness, because the neonatal skull is made of several pieces of skull splicing, there is a bone gap between each piece of skull, this structure is conducive to the newborn through the birth canal delivery. At the beginning of labor, the newborn skull will overlap cranially to facilitate the downward movement in the birth canal for normal delivery, a phenomenon medically known as fetal head remodeling. With the end of labor and the lengthening of the day, the cranial overlap gradually disappears, along with the growth of the skull, which closes at about three months, and the cranial convexity disappears completely.