After a course of quadruple therapy, there is no need to take other drugs for the time being. The “quadruple therapy” as the recommended program for the eradication of HP, specifically a proton pump inhibitor + a bismuth + two antibiotics, such as omeprazole, bismuth potassium citrate combined with amoxicillin and furazolidone treatment. A treatment cycle is 14 days, and treatment is started without stopping the drug as much as possible. Stop the medication after 14 days, and review after 1 month of stopping the medication, and decide whether to continue the medication according to the result of the review. 1. Negative: hp treatment review time should be more than one month after stopping the drug, if the result is negative, on behalf of has been eradicated, follow-up review can be. If there is still discomfort at this time, it is recommended to treat the symptoms. For example, those with obvious bloating can use domperidone to promote gastrointestinal peristalsis and help relieve flatulence. 2. False-positive or false-negative: If the result of the breath test is at the threshold or if the medication has not been stopped, it is recommended to wait for another month for a review. 3. Positive: hp treatment failure due to irregular drug taking and bacterial resistance. Although the eradication of Hp failed, but has taken antibiotics, the next treatment should be after three months. Because antibiotics will inhibit the growth of bacteria, so that it enters the stationary phase, when the use of antibiotics is not effective. There is also the possibility of adverse consequences such as drug resistance.