There are still many side effects of the H. pylori vaccine. Patients may experience vomiting, acid reflux, and in some cases, heartburn and stomach pain. The H. pylori vaccine has many side effects and is not commonly used clinically, and the H. pylori vaccine does not effectively prevent H. pylori infection. Patients should not rely solely on the H. pylori vaccine to prevent H. pylori, there is still a possibility of H. pylori infection after H. pylori vaccination. Usually, you should pay attention to regular diet and reasonable diet, don’t overeat, pay attention to light diet, keep the food you eat hygienic and safe. If H. pylori infection does not cause serious symptoms can be treated, maintain a healthy diet can restore the balance of the flora.