H. pylori infection has to be treated. H. pylori is a bacterium that can parasitize in stomach acid. When the stomach is infected with H. pylori bacteria will not only affect the function of the stomach. At the same time, the toxic substances released by H. pylori will also invade the gastric mucosa, so the possibility of suffering from gastritis, gastric ulcer, duodenal ulcer will also increase. Long-term inflammation and ulcers in the stomach will not only affect the digestion of food, but also lead to abnormal growth of stomach tissue, which may lead to the onset of stomach cancer in the long term, threatening the health and life of patients. H. pylori is also contagious, and if someone in the family is infected, there is a certain possibility that the whole family will get sick due to intimate contact or sharing of utensils. Therefore, H. pylori should not only be treated in time, but also the whole family should be treated together.