Many patients are found to have H. pylori infection (Hp-positive) when they get their gastroscopy report, so what are the dangers of H. pylori infection? H. pylori was first discovered by Australian gastroenterologists Barry Marshall and Robin Wall. The discovery of H. pylori was first made by Australian gastroenterologists Barry Marshall and Robin Wall, who were awarded the Nobel Prize in Physiology and Medicine in 2005. Clinical studies have shown that H. pylori is a major causative factor in chronic active gastritis, peptic ulcers, gastric mucosa-associated lymphoid lymphoma and gastric cancer. In 1982, the Australian scholar Marshall observed that a bacterium called H. pylori in the gastric mucosa was associated with the development of chronic gastric disease. 1, volunteers with normal gastric mucosa, oral administration of H. pylori suspension can cause gastritis symptoms and pathological changes. 2, the detection rate of H. pylori is very high when suffering from chronic gastritis, while this bacterium cannot be detected in those with normal gastric mucosa. 3, patients with chronic gastritis have significantly higher antibodies to H. pylori in the serum, and anti-H. pylori immunoglobulins can be detected in gastric fluid, which indicates that H. pylori is a pathogenic antigen (pathogen). 4, treatment for H. pylori will result in significant improvement of gastric mucosa in patients with chronic gastritis. 5, 60%-80% of gastric ulcer and 70%-100% of duodenal ulcer patients have detectable H. pylori in the gastric sinus, and serological tests confirm that these individuals have high titers of serum H. pylori antibodies. 6, refractory ulcers that are not treated with traditional anti-ulcer drugs, most ulcers can heal after switching to anti-H. pylori drugs. 7, infecting rhesus monkeys with H. pylori can make them develop chronic gastritis, and the pathological changes of gastric mucosa are similar to human infection, that is, the preparation of animal models of HP gastritis has been successful. The above shows that the relevance of H. pylori to chronic gastric disease is conclusive. In 1994, the World Health Organization/International Agency for Research on Cancer (WHO/IARC) designated H. pylori as a class I carcinogen. There is now a consensus in the medical community that H. pylori is definitely the causative agent of chronic gastritis and is also very closely related to ulcer disease and gastric cancer. Numerous studies have shown that more than 90% of duodenal ulcers and about 80% of gastric ulcers are caused by H. pylori infection. H. pylori is highly infectious and can be transmitted through hands, unclean food, unclean utensils and feces, so it is important to develop good hygiene habits in daily diet to prevent infection. Pay attention to regular and quantitative diet, nutritious, soft and easy to digest food, a small number of meals, chew and swallow slowly; avoid overfilling, cold, sour and spicy, fried and stimulating food, avoid smoked and pickled food. Pickled foods containing nitrosamines also have a carcinogenic effect, which, together with the role of positive H. pylori, increases the chances of cancer. Those who are diagnosed with H. pylori infection should promptly undergo standardized Western or Chinese herbal medicine treatment, which can effectively kill the pathogen and return you to a healthy stomach.