羊水过少是妊娠期常见的产科并发症,妊娠中期以后羊水的主要来源是胎儿的尿液,通过母婴间的液体交换保持动态的平衡,在母体、羊水和胎儿间维持着双向的水电解质交换。因此,羊水的减少与羊水的产生量减少、吸收、外漏增加及胎盘功能减退、胎盘血流灌注量下降和母体血容量不足有关。随着围生医学的不断发展,人们对产科质量的要求不断提高,羊水过少对妊娠妇女及 Oligohydramnios is a common obstetric complications during pregnancy, the main source of amniotic fluid after the second trimester of pregnancy is the urine of the fetus, through the liquid exchange between mother and child to maintain a dynamic balance between the mother, amniotic fluid and fetus maintained two-way water and electrolyte exchange. Therefore, the reduction of amniotic fluid and amniotic fluid production decreased, increased absorption and leakage and placental dysfunction, decreased placental perfusion and maternal blood volume deficiencies. With the continuous development of perinatal medicine, people’s obstetric requirements continue to increase the quality of oligohydramnios for pregnant women and