There is a difference in the causes of normal navicular head and pathological navicular head. Normal navicular head is caused by incorrect sleeping position, while pathological navicular head is due to congenital developmental disorders. Normal navicular head is a result of intrauterine compression or sleeping position. The skull is soft at a young age, and babies often sleep on their sides, not lying flat or rarely lying flat. Maintaining a side-sleeping position can cause navicular head, which can be relieved by laying the baby flat. Pathological boat-shaped head, is due to congenital developmental disorders, infants and young children brain tissue development is fast, the skull should also be expanded, if the front and back of the bone seam premature closure will lead to the head to continue to grow back and forth into a boat-shaped, which may lead to neurological dysfunction, for this phenomenon, surgical treatment is the only way, and should be operated at the earliest possible time.