Babies always hit their heads generally does not affect intelligence, but if the baby hit his head for a long time may also lead to cranial trauma, prone to intracranial hemorrhage, endangering the baby’s physical health. In general, the baby always hit his head, and there is no local bleeding, swelling, parents do not need to worry too much, and will not affect the baby’s intellectual development. However, in daily life, need to do a good job of protective measures to avoid causing the baby often hit his head. However, if the baby hit his head with greater strength, it may lead to localized swelling and bleeding, usually due to simple scalp hematoma, but in severe cases, intracranial blood vessel rupture can occur, forming intracranial hemorrhage. Intracranial hemorrhage can endanger the baby’s life, and may also lead to sequelae if treatment measures are not taken in time. If the baby has symptoms such as projectile vomiting and unconsciousness after hitting his head, parents need to take the child to a regular hospital for relevant examinations to clarify the cause of the disease.