胎儿体质量达到或超过4000g者称巨大儿。国内资料报道巨大儿占出生总数的5.62%~6.49%[1],并有逐年上升趋势,但产前诊断率普遍较低,母婴并发症多,特别是发生肩难产则危险性更大。因此,有必要探讨巨大儿的产前诊断及巨大儿的预防,以减少并发症。现对巨大儿的产前诊断及预防的研究 Fetus body mass reached or exceeded 4000g said giant children. Domestic data reported huge children accounted for 5.62% ~ 6.49% of the total number of births [1], and there is an upward trend year by year, but the prenatal diagnosis rate is generally low, more maternal and child complications, especially in the shoulder is more dangerous. Therefore, it is necessary to explore the huge prenatal diagnosis of children and giant children’s prevention, to reduce complications. Prenatal diagnosis and prevention of huge children