1 year old baby eat what vomit, can be seen in acute diarrhea disease, intestinal obstruction or intracranial infection and other diseases, the specific need to combine the baby’s situation to analyze. 1. Acute diarrhea disease: such as rotavirus enteritis, clinical vomiting, vomiting can be a serious manifestation of “what to eat what to vomit”, often accompanied by diarrhea, manifested in egg-shaped stools, some children have fever symptoms, the serious condition can be obvious dehydration. 2. Intestinal obstruction: it is a common gastrointestinal surgical disease in children, which can be caused by various reasons, such as intussusception, foreign body in the intestinal tube and fecal stone obstruction, etc. Clinically, it can present with the above mentioned vomiting, which may contain bile or feces, and may be accompanied by paroxysmal abdominal colic and anus with no anal defecation or defecation. 3. Intracranial infections: such as severe bacterial meningitis, cranial hypertension can occur, manifested as projectile vomiting, which may be accompanied by convulsions, fever and depression and other symptoms, perfect lumbar puncture examination can be a clear diagnosis. 4. Others: such as cranial trauma, often with a history of trauma, intracranial hemorrhage, increased intracranial pressure, the above phenomena can also occur. It is recommended to consult a specialist for diagnostic evaluation, clarification of the cause, and active treatment.