Congenital valvular pulmonary stenosis accounts for 5-10% of all congenital heart disease. Balloon pulmonary valvuloplasty is a safe and effective method in reduction of moderate to severe valvular pulmonary stenosis. This retrospective study done in Hawler surgical specialty cardiac center on pediatric patients who had pulmonary valve stenosis (with echocardiographic peak gradient 2:50mmHg) and treated by balloon pulmonary valvuloplasty. A total of 178 cases were involved, 93(52.25%) patient was male and 85 (47.75%) patients was female. 160 patient (89.89%) were treated with single balloon method 18 patient (10.11%) were managed by double balloon method technique. Follow up period of these patients range from 1 year to 10 years (mean of 5.5 year). In 153 patients (85.96%) pressure across pulmonary valve were below 36 mm Hg, while in 21 (11.80%) pressure gradient across pulmonary valve were (36-50 mm Hg). Four (2.24%) patients had pressure gradient across pulmonary valve more than 50 mm Hg. Forty patients (22.47%) developed mild pulmonary valve regurgitation, while 20 patient (11.24%) developed significant pulmonary valve regurgitation. Balloon pulmonary valvuloplasty provides long-term relief of pulmonary valvular obstruction in the majority of pediatric patients. The long-term results are favorable.