The normal value of carbon 14 is <100dpm/mmol CO2, and higher than 100dpm/mmol CO2 is positive, suggesting the presence of Helicobacter pylori infection. If the carbon 14 test result is abnormal, it is recommended to consult a doctor as soon as possible and take medication regularly. H. pylori infection can induce gastritis, gastric ulcer and other diseases, and patients may manifest epigastric pain, fullness and discomfort, acid reflux and other digestive symptoms. If the diagnosis of H. pylori infection can be treated with quadruple therapy, i.e., proton pump inhibitor, bismuth, plus two antibiotics, such as omeprazole, bismuth potassium citrate, amoxicillin, and clarithromycin, and the medication time is usually 14 days. People with H. pylori infection should be actively treated with regular medical checkups and retests to avoid spreading the infection to others. At the same time, they should take medication regularly, correct bad dietary habits, exercise appropriately, and maintain a happy mood.