If a child suddenly vomits in the middle of the night after sleeping, it is necessary to consider whether it is caused by an unreasonable diet that cannot be digested, or caused by acute gastroenteritis or intestinal obstruction, and it is necessary to determine the cause according to different accompanying symptoms and relevant examinations. Common causes and treatment a. Dietary factors: If the child eats too much greasy, cold, indigestible food during the day or eats too much, piled up in the intestines can not be digested, and drink a lot of water, so that the stomach tension expands, the symptoms of vomiting easily in the middle of the night, if the child’s discomfort is relieved after vomiting, and there are no other symptoms of discomfort, more consider the stomach indigestion caused by indigestion, do not have to worry too much. There is no need to worry too much. If necessary, you can give your child oral lactobacillus tablets or stomach tablets to promote digestion. Second, the disease factor: 1, acute gastroenteritis: if the child eats food infected with bacteria or viruses, will lead to acute gastroenteritis, can appear to sleep in the middle of the night suddenly vomiting symptoms. If the child is accompanied by diarrhea, abdominal pain, fever and other symptoms, you need to promptly seek medical attention, give montelukast and other drugs to stop diarrhea, most children do not need anti-infective treatment, the symptoms are serious can be given rehydration treatment; 2, intestinal obstruction: patients with intestinal obstruction can also lead to the symptoms, accompanied by anal stop exhaust defecation, abdominal distension, etc., after the diagnosis to fasting water to reduce abdominal distension, can be given enema treatment or surgery; 3. Other: children with bumped head before sleep may have brain hemorrhage, intracranial hematoma, etc., resulting in increased intracranial pressure and symptoms of sudden vomiting in the middle of the night, and should seek medical attention to clarify the cause, and in serious cases, mannitol should be applied to lower cranial pressure, and surgical treatment can be performed if necessary. In addition, children with acute appendicitis, acute pancreatitis, intussusception, central nervous system infection and other diseases can also lead to sudden vomiting in the middle of the night, it is recommended to seek medical attention to clarify the cause, according to the cause of treatment. Note that children should not eat too much dinner and should not be too greasy, and do not eat dinner too late, which makes it difficult to digest food and cause vomiting. When vomiting occurs, be sure to observe the accompanying symptoms of the child, such as fever that does not subside, poor mental state, and prolonged symptoms that are difficult to relieve.