The c-breath test generally refers to the carbon 14/carbon 13 breath test, the positive result of which suggests a possible H. pylori infection. The carbon 14/carbon 13 breath test is a painless, non-invasive, quick and easy H. pylori diagnostic method commonly used in clinical practice to find out whether there is H. pylori infection and to determine the efficacy of infection treatment. Thus, it assists in the diagnosis of gastritis, gastric ulcer, duodenal ulcer, gastric cancer and other diseases. A positive result indicates a possible H. pylori infection. If carbon 14/carbon 13 breath test is found to be positive, one should consult a doctor in time for a comprehensive analysis and diagnosis in conjunction with clinical symptoms and signs, other auxiliary tests, etc., and further treatment or therapy. Helicobacter pylori infection is generally taken four drugs sterilization, such as omeprazole, amoxicillin, furazolidone, bismuth pectin, etc., but the specific drugs and the choice of specific antibiotics should be based on the guidance of the local doctor, and follow the doctor’s instructions for the use of medication.