Pulmonary stenosis in two-month-old infants is currently treated surgically and generally has a better prognosis. Pulmonary stenosis is a relatively common congenital heart disease in pediatrics, and two-month-old infants with pulmonary stenosis generally do not have more obvious clinical manifestations. Clinical treatment for congenital pulmonary stenosis in infants and young children is mainly based on surgical treatment, the current balloon valvuloplasty is the preferred method of treatment, for most of the children in the postoperative period can generally return to normal. Therefore, if the baby suffers from pulmonary stenosis after birth, it is recommended to go to the pediatrician as soon as possible, under the guidance of the doctor to standardize the treatment, so as not to delay the condition.