Helicobacter pylori infection is harmful to children, such as may lead to indigestion, peptic ulcer and so on. H. pylori will adsorb on the gastric mucosa and damage it, thus affecting the child’s appetite and leading to anorexia, vomiting and other symptoms. The lesions usually do not appear for a short period of time, but symptoms such as functional dyspepsia can occur. After Helicobacter pylori infection, if left untreated for a long period of time, it may cause damage to the mucosa of the digestive tract, which in turn may lead to the occurrence of pediatric peptic ulcers, affecting the digestion and absorption of food, thus affecting the growth and development of children and so on. When a child develops H. pylori infection, it is recommended that he or she seek medical attention in a timely manner for targeted treatment or therapy under the guidance of a doctor.