Drinking alcohol diarrhea is may be excessive drinking, cold, eating greasy, alcohol allergy, gastroenteritis and other causes. 1. Excessive drinking: drinking too much alcohol, alcohol stimulates the gastrointestinal tract to speed up the peristalsis, diarrhea may occur, pay attention to moderate drinking. 2. Cold: If you drink beer that is chilled in the refrigerator, a cold abdomen will stimulate the intestinal mucosa and cause diarrhea, which may be accompanied by abdominal pain and other symptoms. 3. Eating greasy food: drinking alcohol while eating hot pot, barbecue and other greasy, stimulating food, speed up the gastrointestinal tract peristalsis, diarrhea may occur. 4. Alcohol allergy: some people are allergic to alcohol, after drinking alcohol to stimulate the gastrointestinal tract to speed up the peristalsis, diarrhea will occur, may also be accompanied by itchy skin and other allergic reactions. 5. Gastroenteritis: gastroenteritis and other diseases, alcohol after drinking alcohol aggravated mucosal damage, inflammation stimulation of intestinal mucosal secretion of fluid increases, gastrointestinal tract peristalsis accelerated, there will be diarrhea. Or alcohol stimulation and other causes of acute gastroenteritis, can also cause symptoms of diarrhea. Diarrhea after drinking to exclude excessive drinking and other physiological reasons, should be timely consultation, under the guidance of the doctor to identify the causes, and reasonable treatment, so as not to delay the condition.