Decreased amniotic fluid in late pregnancy may be a normal physiological phenomenon, or it may be related to factors such as ruptured fetal membranes and decreased fetal urine. First of all, the specific causes should be clarified, and then targeted treatment should be carried out. Common causes and treatment measures 1. Normal physiological phenomenon: As the pregnancy cycle lengthens, the fetus grows gradually and the volume of the uterine cavity is limited, so the amount of amniotic fluid will gradually decrease. It is recommended to go to the hospital for examination, if the amount of amniotic fluid is within the normal range, there is no need to worry excessively, drink more water appropriately and pay attention to fetal movement; if the amniotic fluid is below the normal range, intervention measures should be taken under the guidance of the doctor; 2, rupture of fetal membranes: rupture of fetal membranes in late pregnancy will cause amniotic fluid to flow out, making the amniotic fluid decrease and increasing the risk of fetal and maternal infection and umbilical cord compression, which should be seen immediately at the hospital; 3, reduction of fetal urine : Fetal urine is the main source of amniotic fluid, various causes of reduced fetal urine can reduce amniotic fluid, such as decreased placental function, fetal malformation, slow fetal development, etc. This situation should promptly seek medical attention and take appropriate measures as early as possible; pregnant women themselves suffer from certain diseases, such as chronic hypertension, pre-eclampsia, etc., may also lead to low amniotic fluid, and should actively cooperate with the doctor for treatment. Note 1, too little amniotic fluid can cause intrauterine hypoxia, causing intrauterine distress, this situation must be taken seriously, timely medical attention; 2, regular maternity checkups, keep track of the development of the fetus and the pregnant woman’s own physical condition.