Infection with Helicobacter pylori is potentially contagious to small children. Helicobacter pylori can be parasitized in the gastric mucosa tissue, with a certain degree of contagiousness, can be infected through the oral cavity into the human body, the transmission mode between people for the mouth – mouth or fecal – mouth route. So when a child comes into contact with the saliva, body fluids, and vomit, feces and other excreta of an infected person, and eats without washing his hands, he may be infected; and secondly, a child’s prolonged close contact with an infected person, feeding and use of unclean eating utensils used by infected persons, direct mouth-to-mouth feeding, or close contact, can all be transmitted to small children. So when someone in the family has H. pylori infection, it is also important to take the child to the hospital as soon as possible for urea breath test and other tests for clarification. Most patients do not have obvious symptoms of H. pylori infection, and most of them are found accidentally during physical examination. Some patients may experience abdominal bloating, belching and discomfort such as anorexia and acid reflux. In addition, in daily life, we should pay attention to let children develop good hygiene habits, wash hands before and after meals; do not share utensils, cups and toothbrushes and other household items; parents avoid chewing food and feeding it to children.