Nine-month-old baby head on both sides of the more flat is a normal situation, may be and long-term to sleep in one direction related. Nine-month-old babies due to soft bones, in the long-term external pressure will appear deformation of the situation, that is, the baby to take a long time to sleep in a fixed position caused by the two sides of the head is relatively flat, this is normal, parents do not have to deal with special treatment, you can usually burp the baby to take the baby to sleep in a supine position after eating milk, to avoid the side of the baby side of the head to avoid the oppression of the baby. If your baby’s head is flat on both sides, it is recommended that you visit a specialist clinic to have your baby evaluated by a specialist and given targeted treatment.