Vomiting after drinking alcohol is mainly due to the damage to the gastric mucosa caused by alcohol after drinking large amounts of alcohol, resulting in edema and erosion of the gastric mucosa, and in severe cases, gastrointestinal bleeding. In addition, vomiting is also a protective reaction that can reduce the absorption of food and alcohol in the intestine and reduce the symptoms of alcohol poisoning. In addition, in addition to drinking a lot of alcohol, there are a lot of high-fat food and drink can lead to acute gastric dilatation, the volume of the stomach is limited, the food through the symptoms of vomiting can be effectively discharged from the mouth, reducing the pressure on the stomach. So it is not advocated that excessive drinking, moderate drinking to play the role of blood circulation, a large amount of alcohol can cause alcohol poisoning, serious gastrointestinal bleeding, cardiopulmonary dysfunction, sudden death and other situations occur.