Carbon 14, also known as carbon 14 breath test, can check whether there is H. pylori infection in the body, the value of more than 100dpm/mmoL is positive, which indicates the presence of infection, the situation is more serious, need to promptly seek medical treatment. If left untreated, H. pylori infection will continue to develop, which can easily lead to erosive gastritis, gastric ulcer, or even gastric cancer and other digestive tract diseases. Therefore, when the test is positive, treatment should be carried out in a timely manner. H. pylori infection is often treated with quadruple therapy, which is a combination of two antibiotics combined with gastric acid inhibitors and gastric mucosal protectors. Commonly used antibiotic drugs include amoxicillin, tetracycline, clarithromycin, levofloxacin, etc. Patients who have an allergic reaction to a drug or have drug resistance can choose metronidazole instead. Lazoles are commonly used as gastric acid inhibitors, such as omeprazole, lansoprazole, rabeprazole, etc. Bismuth agents such as colloidal bismuth subcitrate are commonly used for gastric mucosal protection. After the above treatment, the medication can be discontinued for one month and then return to the hospital for review, if H. pylori negative then no need to continue taking medication. In addition, H. pylori is contagious, so patients should avoid sharing utensils with others during the treatment period, and disinfect the utensils in time after use. The patient should also pay attention to a light and balanced diet, and reduce the consumption of spicy, moldy and pickled foods to help the recovery.