For low amniotic fluid, the main treatment is to take the following aspects. I. General treatment. Rest in the left side position to facilitate placental blood circulation, and increase water intake appropriately. It is necessary to count fetal movements every day, strengthen monitoring, dynamically monitor the amount of amniotic fluid and the SD value of umbilical artery blood flow, assess the fetal growth and development, and perform fetal heart monitoring at least twice a week after 28 weeks. Second, drug treatment. Low molecular dextran and low molecular weight heparin can be taken to improve the placental perfusion and increase the amniotic fluid volume. These are pregnancy class B drugs with fair efficacy, and are commonly used in clinical treatment of low amniotic fluid. Third, transabdominal intra-amniotic infusion, intra-amniotic infusion has a certain risk factor, and it cannot fundamentally treat low amniotic fluid, so it is not done as a routine treatment method, and there is a great risk factor. If the amniotic fluid is low and combined with fetal abnormalities, it is necessary to consider inducing labor; if it is combined with a normal fetus and the pregnancy is greater than 36 weeks, a caesarean section can be considered as soon as possible.