Drinking alcohol and vomiting blood indicates that drinking alcohol has caused damage to the esophagogastric mucosa and caused gastrointestinal bleeding. Since alcohol is a damaging factor, it can lead to mucosal inflammation or even ulceration, acute erosive gastritis or peptic ulcer with bleeding, and there can be vomiting of blood which is the expression of vomiting blood. There may also be more pronounced symptoms of nausea and vomiting after drinking alcohol, which can also lead to the possibility of pancreatic tearing, which is a more serious cause of gastrointestinal bleeding. Therefore, if you vomit blood after drinking alcohol, it is recommended that the patient immediately stop drinking again and go to the hospital for symptomatic treatment. If the vomiting of blood continues to worsen, gastroscopy should be performed if necessary to clarify the cause of bleeding, and endoscopic hemostatic treatment can also be given, along with supportive symptomatic treatment such as fasting. So drinking and vomiting blood is a more serious situation and should be treated immediately at a hospital.