Amniotic fluid is the fluid that fills the amniotic cavity and can play a role in protecting the fetus and cushioning external pressure. Usually, the uterus can be divided into four quadrants: upper left, lower left, upper right and lower right, and the amniotic fluid index refers to the sum of the depth of amniotic fluid in the four quadrants, which ranges from 8 to 18 cm at 37 weeks of pregnancy. If the amniotic fluid index is more than this range or less than this range, consider the existence of abnormal conditions, then the pregnant woman should be immediately sent to the doctor, and under the guidance of the doctor to regulate. 1, too much amniotic fluid: If the amniotic fluid index is greater than 18cm, consider the amniotic fluid too much. Attention should be paid to the screening of the fetus for abnormalities of the digestive system, the most common being tracheoesophageal fistula. It is also necessary to pay attention to whether the pregnant woman has gestational diabetes, and a 75g glucose tolerance test is recommended to clarify the diagnosis. At this time, you can consider releasing a small amount of amniotic fluid through puncture to relieve symptoms under the guidance of a professional doctor. 2. Low amniotic fluid: If the amniotic fluid index is less than 8cm, consider low amniotic fluid. Pay attention to whether the pregnant woman has gestational hypertension disease or antiphospholipid syndrome, need to monitor the pregnant woman’s blood pressure, but also do fetal heart monitoring examination, pay attention to whether the fetal heart response type is good. At this time, the pregnant woman can be allowed to drink more water and increase the amount of amniotic fluid through hydration therapy. However, if the decrease in amniotic fluid is caused by premature rupture of membranes, she should be hospitalized immediately and given antibiotics to prevent infection. In addition to monitoring the amount of amniotic fluid, it is important to pay attention to the nature of the amniotic fluid. If the amniotic fluid is 3 degrees cloudy, be alert to acute intrauterine distress and use oxytocin to induce labor if necessary. In addition, it is recommended to review the amniotic fluid index again after 2 weeks to note any changes in the amniotic fluid volume.