Helicobacter pylori is contagious. H. pylori is highly contagious and can be transmitted through hands, unclean food, unclean utensils and feces. It is recommended that good hygiene habits should be practiced in daily diet, which can effectively prevent infection. Patients with H. pylori infection tend to have postprandial belching, acid reflux and other symptoms of gastrointestinal diseases, and it is recommended to go to the hospital for gastroscopy and breath test on an empty stomach, which can detect the value of H. pylori. At present, once diagnosed clinically, it is recommended to actively sterilize treatment, can be given quadruple drug therapy, such as clindamycin plus metronidazole plus omeprazole enteric capsules plus Lizudra for treatment, active treatment for two weeks, H. pylori infection can be cured.