摘要INTRODUCTION Although laparoscopic herniorrhaphy is the most common procedure performed by pediatric surgeons at present,herniorrhaphy with an asymptomatic patent processus vaginalis (PPV) remains controversial.The incidence of contralateral PPV on laparoscopy in previous studies was reported as 20％-50％,but it is believed to approach 100％ in premature infants.It has been reported that 4％-34％ patients have the risk of developing subsequent metachronous contralateral hernia after a repair of an ipsilateral hernia.[1]If this is true,then the identification and closure of a PPV at the time of ipsilateral hernia repair will obviate the need for a second operation in thousands of children every year.With recent advances in minimally invasive surgery,transinguinal diagnostic laparoscopy has emerged as a safe and effective method for evaluating a pediatric patient with PPV.Meanwhile,the laparoscopy has been widely used to manage the infantile hypertrophic pyloric stenosis (IHPS),due to equally high success rate,minimal complications,and a shorter hospital stay.