目的　应用腹腔镜技术研究国人脐中襞及脐内侧襞与脐环会合的类型，并测量分析脐中/内侧襞宽度分布规律。  方法　自2006 年1 月～2009年12月, 收集了腹腔镜腹股沟疝修补术中463例患者脐正中/内侧襞与脐部会合类型,测量了脐正中襞和脐内侧襞于盆壁附着处宽度，对比分析不同年龄组和男女两性之间脐内侧襞宽度。  结果　脐正中襞和脐内侧襞与脐部会合方式分4型，双侧脐内侧襞与脐正中襞分别独立会入脐环为Ⅰ型22.2％（103例），脐正中襞与一侧脐内侧襞回合后再与另一侧脐内侧襞分别汇入脐环为Ⅱ型43.6％（202例），双侧脐内侧襞与脐正中襞三者会合一起后再汇入脐环为Ⅲ型20.7％（96例），未见脐中襞者为Ⅳ型13.5％（62例），与国外报道相似。在儿童组、青少年组、中青年组和老年组之间，脐正中襞宽度没有差别，但老年组脐内侧襞宽度大于2.0cm以上比例（46.6%）显著低于儿童组（73.9%）。男女两性别之间，脐正中襞宽度也没有差别，但男性脐内侧襞宽度大于2.0cm以上比例（61.6%）显著高于女性（41.4%）。  结论　腹腔镜下国人脐正中襞及脐内侧襞与脐部会合方式可分4型，脐内侧襞宽度在不同年龄、性别之间有显著差异，为腹腔镜腹股沟疝修补术中切取自身材料提供参考。

Objective　To explore the morphologic features of the umbilical ring (MU), the median umbilical ligament (MnU) and the medial umbilical ligament (MdU) under laparoscope.　Methods　463 patients undergone laparoscopic herniorrhaphy from 2006 to 2009 were collected. The various shapes of MnU and MdU terminated by MU were identified, and followed by the measurement and comparison of the width of MnU and MdU arising from the pelvis.　Results　Four types of umbilical ligaments could be identified as the follows: type I (22.2%, 103 cases), with independent convergence of MnU and MdU to MU; type II (43.6%, 202 cases), with the convergence of MnU and unilateral MdU before reaching MU which receiving another MdU independently; type III (20.7%, 96 cases), bilateral MdUs and MnU converged together before their reaching to MU; and type Ⅳ (13.5%, 6 cases), with no MnU. There was no age and sex difference of the width of MnU, however, the percentage of older aged patients with the MdU width of 2.0cm (46.6%) was lower than that of children patients (73.9%), and the percentage of male patients with the MdU width of 2.0cm (61.6%) was higher than that of female patients(41.4%).　Conclusions　Under the laparoscope, 4 convergence types of MnU and MdU can be identified. There are age and sex difference of the width of MdU, which is notable during the process of laparoscopic herniorrhaphy.