Most patients with H. pylori infection may have no obvious symptoms. Some patients may experience stomach discomfort such as stomach pain and bloating, and some may also exhibit symptoms outside of the digestive system such as bad breath. Helicobacter pylori infection is a common cause of gastritis, which is mainly transmitted through oral and fecal orifices and other related routes. In the early stages of H. pylori infection, most patients do not have any symptoms and it does not lead to morbidity. As the infection worsens it may lead to gastritis and the patient may experience symptoms in the digestive tract. Gastritis is mainly caused by damage to the gastric mucosa leading to associated symptoms such as acid reflux, heartburn, belching (burping), abdominal distension, loss of appetite, intermittent abdominal pain and other symptoms. Untreated disease may cause related complications such as peptic ulcer, gastric mucosal atrophy, gastrointestinal bleeding, gastric cancer and other diseases. Helicobacter pylori infection is not necessarily symptomatic, can be clarified by carbon 14 breath test and other tests, it is recommended to consult the gastroenterology department of the hospital in a timely manner, active treatment.