Vomiting in children after a fall may be associated with concussion, intracranial hemorrhage, stress reaction, etc., and requires further differential diagnosis by a doctor. 1. Concussion: If the fall damages the brain cells and tissues of the child, it can cause the child to vomit. 2. Intracranial hemorrhage: If the fall causes intracranial hemorrhage, it can lead to increased intracranial pressure and vomiting. 3. Stress reaction: If a child suffers a stress reaction after a fall, it may cause vomiting. Parents are advised to take their children to regular hospitals in a timely manner to clarify the cause, and if treatment is needed, standardized treatment should be carried out under the guidance of doctors to avoid adverse effects on the body due to delayed conditions.