Diarrhea after drinking alcohol may be caused by alcohol intolerance, improper diet or certain gastrointestinal diseases, and different treatment measures can be taken according to the triggering factors. Common causes 1, alcohol intolerance: alcohol stimulates the mucosa of the gastrointestinal tract, increasing gastric acid secretion and gastrointestinal peristalsis, resulting in gastrointestinal tract dysfunction, thus causing diarrhea; 2, improper diet: when drinking alcohol, if you eat too much greasy, spicy and stimulating food, or unclean diet can lead to gastrointestinal indigestion, resulting in the occurrence of diarrhea; 3, gastrointestinal diseases: such as suffering from irritable bowel syndrome, ulcerative colitis, intestinal tuberculosis, Crohn’s disease, etc. After drinking alcohol, alcohol will stimulate the intestinal tissues and aggravate the symptoms of the disease, and under the stimulation of inflammation, the body can have diarrhea in order to discharge the residual substances as soon as possible. Treatment for post-drinking diarrhea first requires abstinence from alcohol. In addition, the diet should be light and easy to digest, avoid overeating, do not eat raw and cold food, and keep the abdomen warm. Oral intake of intestinal probiotics, such as Bifidobacterium and Bacillus licheniformis, can be taken under the guidance of a doctor to regulate the balance of flora and relieve diarrhea. If the diarrhea is more frequent, you need to go to the gastroenterology department of the hospital for routine stool examination or colonoscopy in time, according to the results of the examination, symptomatic treatment, such as the application of montelukast and other drugs to stop the diarrhea, and if it is caused by bacterial infection, antibiotics can be applied to anti-infection treatment.