The normal value of the breath test is 0-100 dpm, and the breath test is done in the morning on an empty stomach, about 15 minutes after giving a capsule to blow the card. Clinically, a carbon 13 or carbon 14 breath test is commonly used. The results of the test need to be based on whether the patient has had a cold or flu recently or has taken antibiotics. Therefore, one should not have a cold or take antibiotics before the test. If the test result is within the range of 0-100 dpm, it is generally considered to be a normal condition. If it is greater than 700dpm or more, H. pylori is considered to be in an active state, and it does not indicate how much H. pylori is in the stomach. Some H. pylori amounts are relatively small and are in an active state, and the result of the breath test can also appear very high. If it is very high, it is necessary to give a gastric triple or gastric quadruple drug, anti-H. pylori symptomatic treatment.