DOB value of 39.7 is high. DOB, i.e., when performing carbon 13 breath test, applying radioisotope labeling urea, comparing curvature values before and after the human breath test, is a laboratory indicator. At present, hospitals generally take the normal DOB value of 4, > 4 is positive. A DOB >4 suggests that H. pylori infection may be present, but there are no clinical studies that correlate DOB values with the severity of infection. A DOB value of >4 and a positive value generally indicates that the patient has a gastrointestinal H. pylori infection. It needs to be combined with the patient’s past medical history and family history to determine the treatment plan. For example, the presence of family history of gastric cancer, history of reflux esophagitis, history of peptic ulcer, and the age of the subject are important measurement factors for H. pylori clearance. DOB value of 39.71 is much higher than 4, which is positive, and reasonable measures should be taken according to one’s own situation. It is recommended to go to a regular hospital for consultation and treatment.