H. pylori mainly through the hands, unclean diet, unclean utensils, feces and other infectious, through the mouth into the stomach, part can be killed by gastric acid, part attached to the mucus layer of the gastric sinus, settled in the mucus layer and the surface of the mucosal epithelial cells of the gastric sinus, is generally not invasive to the gastric glands and intrinsic layer. Usually the main common causes are as follows: 1, dining with H. pylori-infected people, there is no meal-sharing system, especially soup and vegetable dishes, sharing utensils lead to infection. 2, intimate contact between adults, such as shaking hands, kissing, etc. lead to H. pylori infection. 3, feeding children food, do not pay attention to hygiene, some mouth-to-mouth feeding, leading to H. pylori infection. 4, carriers kissing the baby’s cheek, may bring bacteria to the stomach, bacteria adhering in the stomach, H. pylori infection; 5, diet without attention to hygiene, especially raw food susceptible to H. pylori infection, such as steak half-cooked, hot pot meat shabu-shabu time is too short, melons and fruits are not washed, etc., are the hidden danger of H. pylori infection. 6, do not pay attention to washing hands after the stool to take something to eat with your hands. So daily life pay attention to good hygiene habits is also the most important way to eliminate H. pylori infection.