胎儿体重达到或超过 4 0 0 0 ｇ者称巨大胎儿。国内资料报道巨大胎儿占出生总数的 5 6 2 %～ 6 4 9% [1] ,并有逐年上升趋势。巨大胎儿可造成头盆不称、难产、肩难产等 ,如处理不当可发生严重并发症 ,给母儿带来较大伤害。1　对母体的影响1 1　产程延长、产程停滞　由于胎儿? Fetal weight reached or exceeded 4000 g said huge fetus. According to the domestic data, the huge fetus accounted for 56.2% ~ 69.4% of the total number of births [1], and has been increasing year by year. Huge fetus can cause cephalopelvic disproportion, dystocia, shoulder dystocia and so on, such as improper handling can occur serious complications, to bring more harm to the mother and child. 1 impact on the mother 1 1 prolonged labor, labor stagnation due to the fetus?