H. pylori will not recur after eradication, but may be re-infected. H. pylori if after active treatment with medication, through the test result is negative indicates that the eradication is successful, and once the eradication is successful, it will not recur, but if the test value is positive, it means that the eradication has failed, not because of the recurrence but due to the lack of thorough treatment. After the eradication of H. pylori, although it will not recur, there is still a possibility of re-infection, which may be caused by reasons such as eating together or not paying attention to hygiene in general, etc. Therefore, after the treatment, it is still necessary to go to the hospital regularly for review, and if the infection occurs again, it is necessary to actively cooperate with the doctor to take treatment. H. pylori should not be stopped during treatment, but should be taken regularly according to the course of treatment, and after 30 days of stopping the medication, it is necessary to go to the hospital in time for testing to understand the results of the treatment, and at the same time pay attention to the regularity of eating, enhance resistance, avoid eating together, and use more communal chopsticks to reduce the risk of infection.