目的　探讨小婴儿主肺动脉间隔缺损(APSD) 介入治疗的方法及疗效。方法　采用国产室间隔缺损封堵器对1 例4 月龄APSD 患儿进行介入治疗，并随访观察疗效。结果　在成功封堵APSD 后，患儿临床症状好转，随访观察患儿心功能改善，心影缩小，生长发育良好。结论　小婴儿APSD 介入治疗是一种安全、有效的治疗方法。

Objective　To explore the method and efficacy of intervention aortopulmonary septal defect (APSD) in young infant. Methods A four month old APSD infant had undergone interventional treatment using homemade ventricular septal defect occluder, and was followed up to observe the curative effect. Results The APSD had been successfully closured, and the clinical symptoms improved instantly. The follow-up showed heart function improved, heart shadow reduced, and growth well. Conclusions APSD interventional therapy is a safe, effective treatment in young infant.