In principle, a child who has fallen on his head needs to have a CT examination, but in reality, you can reasonably assess whether you need to improve the CT examination according to your own situation. Generally speaking the baby fell on the head, if there is skull fracture or intracranial hemorrhage can be life-threatening, but the probability of occurrence is small. Therefore, in principle, head trauma is recommended to improve the CT examination. If the child is only a slight head injury, not accompanied by dizziness and nausea and vomiting and other symptoms of dysfunction of consciousness, can be observed for 1 to 2 days, such as the patient’s mental state and no other abnormalities, there is no need to carry out CT examination. However, if the baby fell on the head, clinical manifestations, such as depression, unequal pupil size, vomiting, etc., should be emergency perfect head CT examination to determine whether there is intracranial hemorrhage and cerebral hernia may be, if any abnormalities can be emergency surgical treatment. If the patient has a head injury, if the child is not feeling well, should go to the hospital as soon as possible and under the guidance of the doctor to deal with, do not delay, so as not to cause adverse consequences.