After a fall, some children will not have vomiting, some children will vomit at that time, there are also within 72 hours of vomiting, vomiting is an abnormal phenomenon, need to pay close attention to alert the craniocerebral injury. 1. The child has not suffered any injury after the fall, does not have any discomfort, and does not vomit, and the alarm is lifted after 72 hours of observation without vomiting. 2. Some children may vomit immediately after a fall. If the child is unconscious or has impaired body movement while vomiting, prompt medical attention is needed. 3. Some children do not vomit at the time of the fall, but may vomit within 72 hours, especially projectile vomiting, so it is important to get a CT scan of the head. To summarize, if your child vomits after a fall, whether it occurs at the time of the fall or within 72 hours, you need to consult a doctor promptly.