Children who vomit and drink water may have gastritis, gastroesophageal reflux, neurogenic vomiting, intestinal obstruction, intracranial infections, and acute poisoning. 1. Gastritis: it is the most common cause of vomiting in children, mostly caused by improper diet, medication and infection, often accompanied by diarrhea. 2. Gastroesophageal reflux: due to the immature development of the lower esophageal sphincter in infants and young children, vomiting occurs, and drinking water will also vomit. 3. Neurogenic vomiting: It is common in school-age children, and the vomiting is related to emotion, and the food can be eaten again after vomiting. 4. Intestinal obstruction: Especially high intestinal obstruction will be manifested as vomiting, abdominal pain, abdominal distension, radiography can assist in the diagnosis. 5. Intracranial infection: such as purulent meningitis, viral encephalitis, tuberculous meningitis and other intracranial infectious diseases, in addition to vomiting, accompanied by headache, fever, impaired consciousness. 6. Acute poisoning: If you eat poisonous food, such as poisonous mushroom poisoning, white fruit poisoning, etc., the main manifestation is vomiting and poisoning symptoms. The child vomiting symptoms, timely to the hospital to identify the cause of the disease after treatment.