The skull of 2-year-old children is still developing, there is still a lot of room for development, so the skull is relatively soft, it is easy to change the head shape according to the sleeping position, the softness of the sleeping pillow. If you don’t pillow directly to the bed hardness will be large, not as soft as the pillow, long time lying flat is easy to change the head shape, such as the back of the head is particularly flat or head to the side of the crooked. Overall, if you do not pillow lying in bed relatively hard position, a long time posture will lead to head shape changes. Generally speaking, apart from the change in appearance, it does not cause serious consequences, so the main effect is on the appearance. For example, a boy’s future head shape is related to his appearance and may affect his self-confidence, especially if his head shape is strange or abnormal, which may affect his choice of certain occupations. Normal head shape is a very important thing for the child’s future, must choose the right pillow, including the softness, including the height, to fit the child’s use, to form a more normal shape of the head shape.