目的：探讨胎儿胰胆管合流的类型及十二指肠乳头的形状和位置。方法：选取经水囊引产死后6h内的新鲜胎儿36例，胎龄4月～9月。切取包括胆囊、胆总管、十二指肠、胰腺的标本，观察十二指肠乳头的位置、形状。再置于福尔马林中24h，脱水、透明、浸腊、包埋。组织块以乳头为中心，横行连续切片，厚6μm，每隔5张选1张，作HE染色。显微镜下观察胰胆管合流的类型。结果：(1)十二指肠大乳头半球形58.1% (21例)，圆柱形25% (9例)，扁平形16.9%(6例)3种形态。乳头位于十二指肠降部上1/3部8.3% (3例)，中1/3部69.4% (25例)，下1/3部19.4% (7例)，远部2.9% (1例)。(2)存在U、V、Y和异常合流4种胰胆管合流方式，其中以Y型66.7% (24例)，V型19.4%（7例），U形11.1%（4例），APBDU2.8%（1例）。结论：乳头形态位置及胰胆管合流的类型变化较多，了解这一解剖在临床有重要的意义。

　　Objective: To investigate anatomic features of fetal pancreaticobiliary and duodenal papilla. Methods: 36 foetus with the fetal ages of 4 to 9 months, 6 hours after death by induction of labor with water bag, were studied. The gallbladder, common bile duct, pancreatic duct and duodenum of them were removed and preserved in 10% buffered formaldehyde solution for 24 hours. The location and shape of the greater duodenal papilla were observed, and then serial sections of the specimens, with the thickness of 6 μm, were performed and HE stained, and followed by the observation of the union of pancreatic and bile common ducts under the microscope. Results: 1) Major duodenal papilla showed the shapes of hemispheroid(58.1%), circular cylinder(25%) and applanation(16.9%), which located at the upper pars descendens duodenum (8.3%)，the middle pars descendens duodenum(69.4%)，the lower pars descendens duodenum(19.4%) or the farer(2.9%). 2)The types of pancreaticobiliary ductal union could be classified into four types: "Y" in 24 specimens(66.7%), "U" in 4 specimens（11.1%） ,"V" in 7 specimens（19.4%） and APBDU type in 1 specimens（2.8%）. Conclusions: Pancreaticobiliary ductal union is variable and individual.