收集本院１９９５ ～１９９７ 年的巨大胎儿１３７ 例资料进行分析，以探讨巨大胎儿的发生率及分娩方式与母儿预后。结果显示，巨大胎儿发生率为３６４ ％ ，初产妇与经产妇发生率无差别（ Ｐ ＞００５） ，足月及超期妊娠发生率明显高于过期妊娠（ Ｐ ＜ ００１） 。在产前诊断中，本文通过３ 种方法判断巨大胎儿，发现以（１） 宫高×腹围＋ ２００ｇ ≥４ ０００ｇ ，（２） 宫高＋ 腹围＞ １４０ｃｍ 两种计算方法作为预测胎儿体重的标准，其判断准确率可达６６４２ ％ 及６２７７ ％ 。本文通过各种分娩方式的比较，显示剖宫产率明显增高，但其分娩并发症却明显减少。说明正确选择分娩方式对母儿预后关系重大，适当放宽剖腹产指征，有利于减少母儿各种并发症的发生。 137 cases of giant fetus from 1995 to 1997 in our hospital were collected to analyze the incidence of huge fetus and the mode of delivery and the prognosis of maternal and child. The results showed that the incidence of huge fetus was 364%, there was no difference between primipara and maternal (P> 005), and the incidence of full-term and over-pregnancy was significantly higher than that of expired pregnancy (P <001). In the prenatal diagnosis, this article through the three methods to determine the huge fetus and found that (1) uterine circumference × abdominal circumference ≥ 200 000 g ≥ 4000g, (2) Palace height + abdominal circumference> 140cm two methods as a prediction of fetal weight Standard, the accuracy of its judgment up to 66  42% and 62  77%. This article through a variety of modes of delivery comparison shows that cesarean section rate was significantly increased, but its delivery complications were significantly reduced. The correct choice of mode of delivery on maternal and child prognosis is significant, appropriate to relax indications for caesarean section, help to reduce the occurrence of various complications of the mother and child.