Eight-month-old babies spitting up after a fall can be caused by physiological factors such as shock, or it can be caused by subarachnoid hemorrhage, acute gastroenteritis and other causes. 1. physiological factors: eight months after the baby fell, due to the shock, there will be a short period of gastrointestinal dysfunction, so it is easy to spit up. At the same time, after the fall, due to the sudden change of the child’s position, there may also be spitting up. 2. Subarachnoid hemorrhage: After a fall, infants with subarachnoid hemorrhage tend to spit up, cry continuously or have convulsions. The spitting up can be in the form of spraying, and some infants may have consciousness disorder at a later stage. 3. Acute gastroenteritis: there may be a sudden combination of acute gastroenteritis at this time, resulting in vomiting, abdominal distension, followed by diarrhea and so on. Eight-month-old babies spit up after a fall, it is still recommended to actively seek medical attention to rule out pathological conditions, if necessary, with the doctor’s treatment.