In the 36th week of pregnancy with low amniotic fluid, first, it is necessary to observe whether there are other abnormal indicators, such as a small - for - gestational - age fetus, abnormal umbilical blood flow, reduced fetal movement, especially abnormal fetal heart rate monitoring. If there are abnormalities in these indicators accompanied by low amniotic fluid, it is mostly due to insufficient placental function and fetal hypoxia. Generally, pregnancy needs to be terminated early to rescue the baby. If there are no other abnormalities and only low amniotic fluid, it is mostly caused by lifestyle factors such as the mother drinking less water and sweating more. Generally, the mother should be hospitalized for enhanced fetal heart rate monitoring. At the same time, she should drink more water. If the amniotic fluid returns to normal after drinking water and the fetal heart rate monitoring remains normal all the time, generally, follow - up observation can be carried out.