The normal values of urea breath test are 0-4dpm, 0-100dpm, and the urea breath test is divided into carbon 13 and carbon 14, both of which have different normal values for the test. The most common in the urea breath test is carbon 14, the normal range of carbon 14 breath test is 0-100dpm, the test result is greater than 100dpm, indicating that the stomach has been infected by H. pylori, for patients without symptoms, can be improved through life conditioning. For patients who have developed gastric distension, stomach pain and acid reflux, they should be promptly treated with combination drugs for root cause. Common combination drug treatments include bismuth potassium citrate, omeprazole, clarithromycin and amoxicillin. For special populations such as children and pregnant women, carbon 13 can be used when performing urea breath tests. The normal value of carbon 13 breath test is 0-4 dpm, and values above 4 dpm should be targeted for H. pylori eradication.