When the stomach feels uncomfortable when eating acidic food, it can be treated by drinking warm boiled water and taking medicines such as omeprazole and domperidone. Eating acidic food causes stomach discomfort mainly because acidic food directly stimulates the gastric mucosa, as well as stimulates the secretion of gastric acid. Patients can dilute the concentration of acid by drinking warm boiled water in time, and can also consume some alkaline foods that neutralize stomach acid, such as milk, noodles, millet porridge, bread, soy products, baking soda crackers and other foods. If the patient’s gastric discomfort is more serious and cannot be improved after the above treatment, he/she can take medicines such as omeprazole, domperidone, mosapride, magnesium aluminum carbonate, etc. for treatment, which usually can get effective relief. In addition, patients should reduce the intake of acidic food in their normal life and develop good dietary habits, which can usually effectively avoid stomach discomfort. All of the above drugs are prohibited for those who are allergic to them and should be taken according to the doctor’s instructions. If the patient’s stomach upset symptoms are serious, or persistent failure to improve, it is recommended to go to the regular hospital in a timely manner to consult a doctor to identify the cause of the disease, under the guidance of the doctor to carry out targeted treatment.