Generally you should hang up with a gastroenterologist to check for Helicobacter pylori. H. pylori infection is a digestive disease. H. pylori is closely related to many chronic stomach diseases, and the infection can be asymptomatic. If the infection causes gastritis, peptic ulcer and other diseases, nausea, vomiting, acid reflux, heartburn and other symptoms will appear, and need to consult a doctor in time. Helicobacter pylori testing includes both invasive and non-invasive tests. The former is the gastroscopic rapid urease test and the latter is the C13 and C14 breath test. Among them, the breath test test has been recognized as a common and effective method for detecting H. pylori at present. Before the test, patients should pay attention to stop using antibiotics and bismuth agents such as cephalosporins and bismuth pectin for 4 weeks before the test, stop using acid-suppressing drugs such as omeprazole for at least 2 weeks, and fasting on the day of the test for more than 2 hours, to ensure that the stomach is in a state of emptying, and in the case of gastrointestinal bleeding, it is necessary to stop the bleeding for 1 week before the test, so as to avoid affecting the test results. In order to prevent H. pylori infection, we should pay attention to personal hygiene in our daily life, wash our hands before and after meals, do not share utensils with others, and pay attention to healthy eating. If you experience any of the above symptoms, please seek medical treatment promptly.