Four months baby head shape sleep flat can be corrected, because at this time the skull is relatively soft, so the possibility of recovery after correction is relatively large. Four months of the baby if the head type has to sleep flat, is possible to correct by changing the sleeping position, because at this time the baby’s skull development is not mature, the skull is relatively soft, so if the left side has flat, you can try to let the baby to take the right lying position to sleep, and vice versa the right side of the head is flat, then the form of the left form of lying to correct. In addition, parents can also give the baby to buy shaped pillow to correct, head shape correction is generally more than 6 months to restore the possibility is relatively small, so timely discovery, need to take active measures to correct.