H. pylori infection is recommended to hang up with the Department of Gastroenterology, the doctor will be based on the patient’s recent symptoms, if necessary, to do H. pylori testing, to clarify whether there is a H. pylori infection in order to clarify the diagnosis of the disease. Most people with H. pylori infection have no obvious clinical symptoms. A few patients may have localized oral symptoms, epigastric discomfort, chronic gastritis and other symptoms. A few patients may have localized oral symptoms, epigastric discomfort, chronic gastritis and other symptoms. Localized oral symptoms such as unexplained bad breath; epigastric discomfort is mainly characterized by burning sensation in the retrosternal and epigastric regions, abdominal distension and indigestion, accompanied by acid reflux and heartburn; chronic gastritis is mainly characterized by acid reflux and belching. The most widely used clinical test for H. pylori infection is the carbon 13 or carbon 14 breath test. The test does not rely on endoscopy, is painless for patients, simple and convenient, and has high accuracy, but its results are easily affected by antibiotics, bismuth, and acid-suppressing drugs. There are no specific symptoms of H. pylori infection, most patients can have no obvious symptoms, and a few can have symptoms of chronic gastritis. If you suspect the presence of H. pylori infection or experience discomfort, it is recommended that you consult a doctor in a timely manner for targeted treatment under his or her guidance.