Diarrhea the day after drinking wine is related to factors such as weak spleen and stomach, irritable bowel syndrome, and chronic enteritis. People with a weak spleen and stomach will have their digestion of food affected, especially when they consume too much and too stimulating food, and their functions will be impaired because of the increased burden on the spleen and stomach. Alcohol itself is a stimulating food, irritable bowel syndrome patients, after drinking alcohol will be stimulated, so peristalsis speed up, the contents of the intestine will be quickly excreted, so diarrhea will appear; some people have chronic enteritis disease in the intestines, after drinking alcohol will cause damage to the intestinal mucosa, resulting in impaired intestinal function, mucosal inflammation, so will Diarrhea can occur.