Children need to be checked for H. pylori if they are unwell or have high risk factors, but it is not normally done as a routine test. Due to their young age and poor sense of hygiene, children do not wash their hands in time after coming into contact with items with H. pylori, and the virus enters through the mouth and causes infection. Children are at high risk for H. pylori infection, so they need to be checked for H. pylori. Children can be infected with H. pylori by coming into contact with the saliva of a person infected with H. pylori and eating without washing their hands. H. pylori parasitized in the gastric mucosal tissues will cause a series of gastrointestinal symptoms, such as abdominal pain, bloating, loss of appetite, nausea and so on. Children with these discomforts or high-risk factors should seek medical attention, and H. pylori testing is necessary. The treatment of H. pylori infection is mainly based on triple therapy and quadruple therapy. It should be noted that drug treatment of H. pylori infection should be carried out under the guidance of a doctor.