Positive C14 breath test indicates that the organism is infected with H. pylori, and the patient is recommended to take quadruple therapy to eradicate H. pylori. Carbon 14 breath test means that when the patient takes carbon 14 labeled urea, if there is Hp infection in the patient’s stomach, the urease enzyme in the stomach can decompose the urea into ammonia and carbon 14 labeled CO2, and the carbon 14 labeled CO2 will be expelled through the blood through the breath, and the breath gas will be collected regularly, and the amount of carbon 14 labeled CO2 in the breath can be analyzed to determine whether the patient has H. pylori infection or not. Positive C14 breath test indicates that the organism is infected with H. pylori, and patients infected with H. pylori can be treated with quadruple therapy under the guidance of a doctor, i.e., two kinds of antibiotics + bismuth + proton pump inhibitors, such as amoxicillin, metronidazole, bismuth potassium citrate, pantoprazole, and so on. It is recommended that patients with positive carbon 14 breath test should seek medical attention in time and be treated under the guidance of specialized physicians.