A child who falls on the back of his head on his back should be seen immediately. Improve the cranial CT and other related examinations. Parents must pay enough attention to the back of the head when falling on their backs, falling on the back of the head, easy to cause intracranial hemorrhage, skull fracture. Must go to the regular hospital to further improve the skull CT and other related examinations, if necessary, can improve the skull MRI examination, clear whether there is intracranial hemorrhage may be. Parents should pay attention to the 24 hours after the child fell on the back of the head to observe: there is no subcutaneous hematoma, whether the mental state is the same as usual. If there is drowsiness, accompanied by nausea, vomiting and other manifestations, we should be alert to the possibility of chronic intracranial hemorrhage. It is important to watch over your child to avoid accidental injuries as they grow up.