对249例12～38周的壮族男性胎儿睾丸进行观察,发现其位置随胎龄的增长而逐渐下降.其中两侧同步下降的为240例,占96.39％;两侧未同步下降的为9例,占3.61％.同时还发现无论是同步或不同步下降者,均表现为右侧略高于左侧.按睾丸抵达管口、入管及入阴囊的最早时间,本组结果均略早于国内外同类资料的报道. The observation of 249 male fetus testes from 12 to 38 weeks showed that their position decreased gradually with the increase of gestational age, in which 240 cases decreased synchronously on both sides, accounting for 96.39%; 9 cases , Accounting for 3.61% .At the same time also found that both the synchronous or asynchronous decline, showed the right slightly higher than the left.When the testis arrived at the nozzle, the earliest time into the tube and into the scrotum, the results of this group were slightly earlier than the domestic Foreign similar reports.