Infants hit on the head by a cell phone generally does not affect intelligence, if accompanied by vomiting, lethargy, nausea and other conditions, then we need to be alert to intracranial hemorrhage and other traumatic diseases, may leave sequelae. Infants who fall on the head without other complications, such as drowsiness, poor spirit, crying, nausea, vomiting and other conditions, may be related to concussion, intracranial hemorrhage and other factors, this situation will generally affect the development of intelligence. If there are no other symptoms after hitting the head, the baby’s breastfeeding and sleep quality are normal, parents do not need to worry, this will not affect the baby’s intellectual development. So after the cell phone hit the head, parents should continuously observe the baby’s mental state abnormalities, need to go to the hospital in time for head CT examination.