Diarrhea after drinking alcohol can be caused by gastrointestinal disorders, irritable bowel syndrome, and other causes. 1. Gastrointestinal dysfunction: Wine contains alcohol, which is a strong stimulant and can easily irritate the gastrointestinal mucosa, affecting the intestinal tract’s digestion and absorption of food, and may also lead to an increase in intestinal secretions, resulting in gastrointestinal dysfunction, which can lead to diarrhea. 2. Irritable bowel syndrome: some people have irritable bowel syndrome, intolerance to alcohol and certain foods, so there will be diarrhea after drinking. Diarrhea after drinking alcohol is recommended to consult the gastroenterology department in a timely manner, to clarify the cause of the disease, active treatment, standardized treatment under the guidance of the doctor, it is recommended to quit drinking, avoid spicy, irritating, greasy food, in order to avoid the adverse effects on the health of the body.