Drinking the next day diarrhea, may be due to alcohol stimulation, acute enteritis or intestinal flora imbalance caused by the need to target to take general treatment, drug treatment. 1. Alcohol stimulation: Alcohol in the body will be broken down into acetaldehyde and acetic acid, thus causing some stimulation of the gastrointestinal mucosa, resulting in abdominal pain, diarrhea and other symptoms. It is recommended that patients drink more water to promote alcohol metabolism after drinking, and with oral acid-suppressing drugs such as omeprazole to inhibit gastric acid secretion. 2. Acute enteritis: alcohol consumption often occurs in the environment with friends out to dinner, eating a variety of food and food cleanliness and safety can not be guaranteed, easy to cause intestinal bacterial infection. If there is obvious inflammation reaction, may need to follow the doctor’s advice to take norfloxacin, levofloxacin and other antibiotic drugs. 3. Intestinal flora imbalance: it may be because of drinking alcohol leads to changes in the intestinal flora environment, beneficial bacteria decrease, harmful bacteria increase, resulting in diarrhea, abdominal pain and other manifestations, you can take lactobacillus, bifidobacteria, etc., to regulate the intestinal flora. In addition, if the diarrhea is more serious, it is often necessary to take antidiarrheal drugs, commonly used drugs are montelukast. All of the above medication should be directed by a doctor, and patients should not use the medication on their own.