Four-year-olds with H. pylori infection who do not have any clinical symptoms and who do not have H. pylori infection living at home, along with treatment, can be kept under observation and do not require special treatment. If there is H. pylori infection, accompanied by upper gastrointestinal symptoms, such as nausea, belching, reflux, upper abdominal pain, etc., and there are patients at home with H. pylori infection being treated or needing treatment, standardized anti-H. pylori treatment is required, usually choosing proton pump inhibitors as the center, plus two of three antibiotics such as amoxicillin or clarithromycin and metronidazole together with standardized treatment. Usually one month is a course of treatment, and continuous treatment is needed until the H. pylori test is negative twice to achieve eradication of H. pylori.