Drugs for the eradication of H. pylori medicine are mainly quadruple bactericidal drugs, which can be taken before or after meals, and are usually chosen to be taken before meals. The medication for H. pylori generally consists of four main drugs, including two antibiotics such as amoxicillin and metronidazole, a bismuth agent such as bismuth potassium citrate, and an acid inhibitor such as omeprazole. It is generally recommended that patients take the drug before meals, by taking the drug before meals, can effectively make the drug and H. pylori contact, play a better bactericidal effect, and acid inhibitors and bismuth can effectively protect the gastric mucosa, to avoid gastric acid caused by eating stimulation of gastric mucosa. The choice of drugs for the eradication of H. pylori must consult a physician, under the guidance of the physician, to determine the dose of the drug and the use of time, not blindly choose their own drugs for treatment.