After drinking, stomach discomfort, mainly consider the following causes: 1, damage to the gastric mucosa: excessive secretion of gastric acid, gastric mucosa congestion, edema, exudation and cause uncomfortable symptoms. 2, too much alcohol: cause alcohol poisoning, and can lead to acute liver damage, inducing gastrointestinal symptoms. 3, chronic gastric disease: such as chronic gastritis, peptic ulcer, stomach tumors, etc., after drinking alcohol will aggravate gastrointestinal irritation, nausea, vomiting, acid reflux, abdominal pain and other symptoms. If you have to drink alcohol on special occasions, it is recommended to eat some food in advance or drink warm milk to protect the gastric mucosa and reduce the reaction of alcohol on the gastric mucosa.