H. pylori 13C breath test test value of 8.9dpm is high and suggests H. pylori infection. The 13C urea breath test can be used to detect the presence of Helicobacter pylori infection, and the normal value is 0~4dpm, so the 13C test value of 8.9dpm is abnormal and high. Elevated 13C test value usually suggests H. pylori infection, once the diagnosis of H. pylori infection, doctors need to determine whether to use quadruple therapy for treatment, that is, two antibiotics combined with proton pump inhibitors, bismuth, such as amoxicillin, metronidazole combined with omeprazole, bismuth pectin. In case of abnormal 13C breath test value, it is recommended to go to the hospital and cooperate with the doctor for active treatment.