Drinking alcohol and vomiting yellow water and bitter water may be caused by alcohol stimulation, but also may be bile reflux gastritis, cholecystitis, and gallstones and other causes. 1. Alcohol poisoning: after drinking alcohol will stimulate the gastrointestinal tract to induce vomiting, if the patient vomits more violent will be the duodenal liquid vomiting out. The duodenal fluid contains bile, pancreatic enzymes and other substances, so some people will vomit yellow water and bitter water performance after drinking alcohol. 2. Bile reflux gastritis: Bile reflux gastritis may be caused by gastrointestinal surgery, cholecystitis, Helicobacter pylori infection and other reasons. Patients will have abdominal pain, abdominal distension, nausea and vomiting, and some patients will have yellowish green bile in their vomit. If the patient has bile reflux gastritis, he will vomit yellow water and bitter water after drinking. 3. Cholecystitis: Cholecystitis may be caused by cholestasis and biliary obstruction. Patients will show severe colic in the right upper abdomen, nausea and vomiting, jaundice, etc., and yellow-green bile may appear in the patient’s vomit. Therefore, patients with cholecystitis will have the symptom of vomiting yellow or bitter water after drinking alcohol. 4. Other: Patients who drink alcohol and vomit yellow water and bitter water are also considered to be caused by gallstones and chronic gastritis. It is recommended that patients who drink alcohol and vomit yellow water and bitter water need to consult a doctor in time, if it is caused by alcohol stimulation, not serious patients can not be treated. If it is caused by disease or alcohol stimulation after the symptoms are serious, need to be treated according to the cause of the disease.