Gastric erosion can be treated with drugs such as ranitidine, omeprazole, bismuth potassium citrate, and domperidone. Celiac disease is caused by excessive secretion of gastric acid that attacks the gastric mucosa, and treatment requires the use of drugs to inhibit the secretion of gastric acid. Ranitidine is an acid-suppressing drug that can neutralize gastric acid, reduce the concentration of gastric acid and mitigate the damage caused by gastric acid to the gastric mucosa. Omeprazole is a proton pump inhibitor, which can inhibit the proton pump activity and block the secretion of gastric acid, and the effect of inhibiting gastric acid lasts longer. Since the patient’s gastric mucosa is already broken, drugs that promote gastric mucosa repair, such as bismuth potassium citrate, are needed to enter the stomach and attach to the digestive tract mucosa, which not only reduces the damage caused by gastric acid but also promotes the secretion of mucus from the mucosa so that the mucosa can be repaired as soon as possible. Some people with a feeling of stomach distention need to combine with domperidone for improvement, which can coordinate the peristaltic function of the stomach and allow the food in the stomach to be emptied as soon as possible.