Very mild arterial ring narrowing in the lungs refers to mild narrowing of the pulmonary valve, which can be treated by improving lifestyle and preventing complications if no obvious symptoms are present. If there are obvious symptoms, it may need to be treated by way of surgery. 1. Improve lifestyle: mild pulmonary valve stenosis is a kind of congenital heart disease, patients should develop good habits in daily life, avoiding fatigue, ensuring adequate rest, avoiding polluted environments, washing hands frequently, drinking more water, and at the same time, can be appropriate for aerobic exercise. 2. Prevention of complications: mild pulmonary valve stenosis may induce infective endocarditis, causing heart failure, patients can be treated with diuretics under the guidance of a doctor to reduce the heart load. 3. Surgery: if the patient has heart failure, edema, syncope and other symptoms, it is necessary to timely treatment by surgical means. Such as pulmonary valve separation, pulmonary valve replacement and percutaneous pulmonary artery balloon formationin. Patients with pulmonary arterial ring narrowing should seek timely medical treatment when they experience discomfort in daily life.