Carbon 13 urea breath test general normal reference value is less than 4dpm, more than 20dpm indicates the presence of Helicobacter pylori infection, but the severity of the infection and the value is not proportional. A carbon 13 urea breath test value of more than 20dpm indicates the presence of H. pylori infection, which, if left untreated, can cause a variety of gastric disorders, including gastritis, gastric ulcers, duodenal ulcers, and non-ulcerative dyspepsia. H. pylori is also one of the causes of stomach cancer. In addition, H. pylori symptoms such as bad breath, acid reflux and nausea are contagious and can affect our daily life, as well as socialization. The presence of carbon 13 urea breath test is greater than 4dpm, it is necessary to carry out active standardized anti-Helicobacter pylori treatment, so as to prevent the occurrence of digestive system diseases. It is recommended to pay attention to regular diet, do not eat spicy and stimulating food. Go to the hospital regularly to check the condition of the stomach.