The researchers collect treatment-naive H.pylori-positive patients from the outpatient clinic. The subjects were randomized to receive a 10-day or 14-day course of Tegoprazan bismuth-containing quadruple eradication therapy at 6 weeks after treatment, subjects underwent another 13C-urea breath test. Calculate the eradication rates, adverse reaction rates, patient compliance and cost-effectiveness index of each group.

The researchers collect treatment-naive H.pylori-positive patients from the outpatient clinic. If the subject meets the selection criteria but not the exclusion criteria, and signs an informed consent form, the researchers randomized the subjects in groups: subjects received a 10-day or 14-day course of Tegoprazan bismuth-containing quadruple eradication therapy. The medication of groups are as follows. 6-8 weeks after the eradication treatment, the subjects will review the 13C-urea breath test, and the researcher records the results.

After all subjects were tested, the eradication rates, adverse reaction rates, patient compliance and cost-effectiveness index of each group were calculated.

According to the course of treatment, it is randomized into a 10-day treatment group and a 14-day treatment group. The two groups of bismuth quadruple regimens are the same, as follows:

Amoxicillin 1000mg bid+ Tetracycline 500mg qid+ Bismuth + Tegoprazan 50mg bid

Inclusion Criteria:

• Patients aged 18-70.
• Patients with H.pylori infection (Positive for any of the following: 13C/14C-urea breath test, histopathology test, rapid urease test, stool H.pylori antigen test).
• Patients who have not previously received helicobacter pylori eradication therapy

Exclusion Criteria:

• Patients with serious underlying diseases, such as liver insufficiency (Aspartate aminotransferase or alanine aminotransferase greater than 1.5 times the normal value), renal insufficiency (Cr≥2.0mg/dL or glomerular filtration rate <50 ml/min), immunosuppression, malignant tumors, Coronary heart disease or coronary artery stenosis ≥75%.
• Patients who are pregnant or lactating or unwilling to take contraceptive measures during the trial.
• Patients with active gastrointestinal bleeding.
• Patients with a history of upper gastrointestinal surgery.
• Patients allergic to treatment drugs.
• Patients with medication history of bismuth agents, antibiotics, proton pump inhibitor and other drugs within 4 weeks
• Patients with other behaviors that may increase the risk of illness, such as alcohol and drug abuse
• Patients who are unwilling or incapable to provide informed consents.