Oatmeal can be eaten when the stomach is sour and heartburn occurs. When the stomach is sour and heartburn occurs, spicy and irritating food should be avoided, such food will aggravate the damage to the gastric mucosa and increase the secretion of gastric acid, so it will have a negative impact on the disease. Oatmeal is milder in nature and does not contain irritating substances, so it will not cause irritation to the gastric glands after entering the stomach, so it is possible to eat such food when the stomach is sour and heartburn. Oatmeal is particularly rich in protein and fiber, protein can not only promote the repair of stomach acid, but also protect the gastric mucosa to avoid damage to the gastric mucosa caused by gastric acid and pepsin, while dietary fiber can promote gastrointestinal power, so that the food in the stomach as soon as possible to discharge, to avoid excessive secretion of stomach acid caused by food retention. For patients with more serious symptoms of stomach acidity and heartburn, they should be treated with medication as soon as possible. They can be treated with drugs that inhibit stomach acid and promote mucosal repair, such as ranitidine, famotidine and thioglycollate.