The removal of gastric H. pylori mainly relies on medication, and commonly used medication regimens include triple and quadruple therapy. 1. Triple therapy: 2 antibiotics + 1 proton pump inhibitor. Antibiotics include amoxicillin, clarithromycin, metronidazole, tetracycline, furazolidone and so on. Proton pump inhibitors include omeprazole and rabeprazole. 2. Quadruple therapy: 2 antibiotics + 1 proton pump inhibitor + 1 bismuth. Antibiotics and proton pump inhibitors are the same as above, and commonly used bismuth agents include bismuth potassium citrate and bismuth pectin. Quadruple therapy has a higher eradication rate and better results than triple therapy. Whether it is triple or quadruple therapy, the drug should be taken continuously for 2 weeks and should be rechecked for H. pylori one month after stopping the drug. H. pylori is not easy to be eradicated and is prone to drug resistance, resulting in recurrent infections. It is recommended to consult a doctor for targeted treatment under the guidance of the doctor.