There may be some reasons for diarrhea after each drink: 1, alcohol stimulation leads to increased gastrointestinal peristalsis diarrhea. 2, alcohol often long-term drinking will lead to imbalance of intestinal flora, may also appear diarrhea. 3, the patient to drink with the next drink, if the next drink is clean, whether there is some unclean raw food, resulting in the patient may therefore appear gastroenteritis diarrhea. 4, if the drink is a relatively cold, such as cold beer and cold beer will lead to gastrointestinal nerve in a sensitive state, resulting in irritable bowel syndrome and diarrhea. The patient’s condition will be more sensitive to the nerves of the gastrointestinal tract because of the cold stimulation, which will cause irritable bowel syndrome and lead to rapid intestinal peristalsis and diarrhea symptoms. 5, to analyze whether the patient has chronic colitis, because chronic colitis patients have inflammation of the colonic mucosa, it is not recommended that patients drink alcohol, and drinking alcohol will also lead to diarrhea. Diarrhea, the above are the causes of diarrhea that may occur after drinking alcohol.