H. pylori is usually killed a second time only after a six-month interval. H. pylori treatment is usually quadruple therapy, using a combination of two antibiotics, a bismuth agent, and a proton pump inhibitor. The first use of H. pylori withdrawal 1 month after the need for review, H. pylori show positive, the need for a second removal of H. pylori treatment. After clinical trials concluded that the interval of 1 month, 3 months, 6 months, etc. for testing and the second use of the drug, it was found that H. pylori intervals of half a year to kill again, the removal of H. pylori is the most efficient. Therefore, if the test is still positive after the first H. pylori killing treatment, it is recommended to kill it again at an interval of six months. During the treatment of H. pylori, you need to pay attention to a light diet, do not eat spicy, cold, greasy and other stimulating foods. And need to pay more attention to rest, do not do strenuous exercise, do not overwork, keep a happy mood. During the period of incomplete cure, it is recommended to share meals with family members to avoid causing infections in family members.