The high side and low side of the forehead can be differentiated from physiological and pathological reasons. The physiological manifestation is definitely that the child sleeps on a pillow, and if the sleeping position is incorrect, the head will sleep high on one side and low on the other, showing cranial asymmetry. If it is pathological, we need to find out the cause, such as whether the birth was difficult, whether the birth was assisted by forceps, whether there was hypoxia and asphyxia during delivery, and whether the mental development is the same as that of children of the same age. Sometimes, after laboratory tests, the cranial suture may be prematurely closed, and then it is necessary to determine whether the premature closure is due to congenital cerebral palsy or malnutrition based on the nutritional status and intellectual development, or whether it is due to congenital factors.