There is no single method that is most effective in correcting a baby’s large or small face. Baby’s big and small face may be caused by wrong sleeping posture, slanting neck and other reasons, can be corrected by adjusting the sleeping posture, if necessary, surgical treatment and other methods. 1. Poor sleeping posture: If the baby keeps sleeping in one direction for a long time, there may be asymmetry between the two sides of the face, it is recommended that parents can help the baby to correct the sleeping posture, and when the baby keeps sleeping on the same side, correct and replace it in time to improve the baby’s size of the face. 2. Strabismus: Strabismus is mostly a congenital disease, babies may have abnormal head and neck posture, neck lumps, neck deformities, facial deformities and other symptoms, resulting in facial asymmetry, it is recommended to seek medical attention in a timely manner, and take surgical orthopedics and other methods of treatment when necessary. There may be many reasons for the baby to have a large or small face, it is recommended to seek medical treatment in time to rule out whether it is a disease factor, if it is a disease factor should be treated in time.