Vomiting after a fall on the head is not a problem, and is related to projectile vomiting caused by increased intracranial pressure, and it is recommended that the child be taken to the hospital immediately. Vomiting after a fall on the head belongs to head trauma, and if a child’s fall on the head has caused projectile vomiting, it needs to be taken seriously. Vomiting after a fall on the head may be due to the concussion of the brain tissue, but also may be related to intracranial hematoma and cerebral hemorrhage factors, these factors can cause increased intracranial pressure, manifested as vomiting, headache and other symptoms, and need to be timely symptomatic treatment. Children vomiting after falling on the head may also have other reasons, it is recommended to go to the hospital in a timely manner, early formal treatment, to avoid delays in the condition, resulting in adverse consequences.