Every parent pays close attention to their baby, whether it’s at feeding time or sleeping time, parents will observe their child carefully. Some parents may find that the back of their baby’s head is protruding and consider it an abnormality. So what should you do if the back of your baby’s head is protruding? The back of the baby’s head usually protrudes from the fontanel, one in front and one behind. At birth, the front and back fontanelles are not yet closed and close completely around 3 to 5 months of age. During this time, this phenomenon is normal. If the protrusion is very serious, it may also be caused by abnormal brain development or benign tumors. Parents are advised to bring their babies and go to the hospital for an examination, which may include a cranial ultrasound as well as a magnetic resonance imaging (MRI) test to rule out intracranial lesions. Parents should pay attention to the baby’s sleeping position, want the baby to have a rounded head shape, you should let the baby fall asleep on the side, not only to lie on the side, but also to pay attention to the left side of the right side of the bed back and forth change, otherwise the baby head shape will be sleeping flat. Baby head shape the golden period is the first three months of the fetus, want to shape the baby good-looking head shape as long as to seize these three months, avoid letting the baby long-term to keep a sleeping position. Parents need to pay attention to the baby’s sleeping posture, do not let the child always sleep in one position, should often guide the child to change the posture. Many moms and dads want to know what to do if the back of the baby’s head protrudes out, which is usually caused by poor sleeping posture, so there is no need to worry too much. If the protrusion is very serious, it is time to go to the hospital for examination.