There is no such thing as the best medicine for treating celiac disease and halitosis, and different medicines can be chosen according to the condition. Gastric erosion refers to the phenomenon of gastric mucosa erosion and breakage found under gastroscopy, which may be related to factors such as Helicobacter pylori infection, poor dietary habits and excessive secretion of gastric acid, which will affect the digestion of food, and then the symptoms of halitosis. 1. Inhibit gastric acid secretion: If the patient has heartburn, acid reflux and other symptoms, he can take drugs to inhibit gastric acid secretion, such as famotidine, cimetidine, omeprazole and so on for treatment. 2. Promote gastric motility: if patients have abdominal distension and bile reflux, they can take gastric motility drugs, such as mosapride, domperidone and other treatments. 3. Protect the gastric mucosa: gastric erosion indicates that the patient’s gastric mucosa has damage, and should take gastric mucosal protective agents, such as aluminum sulfate, bismuth potassium citrate and other treatments. 4. Sterilization: If the patient is infected with Helicobacter pylori, in addition to the above medication, antibiotics should be taken for sterilization, such as metronidazole, amoxicillin, clarithromycin and so on. Allergic to the above drugs and the existence of other contraindications specified in the drug specification of the patient is prohibited, and the drugs should be taken in accordance with the doctor’s instructions. If the patient is diagnosed with celiac disease, it is recommended to go to the regular hospital in a timely manner, under the guidance of the doctor to carry out targeted treatment, in order to reduce the adverse effects of the disease.