After drinking alcohol stomach upset can drink warm water, drink milk, under the guidance of the doctor to take diuretic drugs for relief. 1. Drink warm water: Drinking warm water after drinking alcohol can dilute the alcohol in the stomach, promote the excretion of alcohol, and relieve the patient’s stomach discomfort after drinking alcohol. 2. Drinking milk: milk has the effect of promoting digestion and reducing the stimulation of the gastric mucosa. Drinking an appropriate amount of milk after drinking alcohol can relieve the discomfort of the stomach after drinking alcohol. 3. Diuretic drugs: patients can also take oral furosemide tablets, hydrochlorothiazide tablets, bumetanide tablets and other drugs under the guidance of the doctor, to promote the patient will be alcohol discharged from the body, to alleviate the patient’s stomach discomfort after drinking alcohol. The phenomenon of stomach discomfort after drinking alcohol may be due to alcohol stimulation of the stomach and intestines, resulting in damage to the gastric mucosa. If the stomach discomfort is found to be so unbearable, patients need to go to the gastroenterology department of the hospital immediately for examination and treatment.