Patients with pulmonary stenosis, even if it is mild, should be treated as early as possible as long as they have symptoms. In addition to giving anticoagulants and vasodilators, attention should be paid to general treatment: including avoiding hypoxic environments, enhancing oxygen therapy, and reducing invasive examinations. Specific treatment includes the following: 1. Vasodilators, which are currently the main drugs used to treat pulmonary stenosis, such as calcium channel blockers, prostacyclin and analogs, endothelin receptor antagonists, and phosphodiesterase inhibitors, need to be applied long-term. 2, anticoagulation, patients often have the risk of thrombosis or thromboembolism, currently are recommended to give anticoagulation therapy. The commonly used drug is oral warfarin, and it is generally considered appropriate to maintain the international standardized ratio of 2 to 3. 3.Correction of cardiac insufficiency, cardiotonic, diuretic, vasodilator, has a certain effect on prolonging the patient’s life. 4, supportive treatment, with hypoxemia can be given long-term oxygen, malnutrition to give nutritional support therapy. 5.Interventional treatment. Pulmonary stenosis can not be cured at present, the treatment is symptomatic treatment to relieve symptoms, pulmonary stenosis is a progressive disease, even after giving treatment, the average survival time of those with effective treatment is about 5 years.