The reaction of the fetus in the womb with low amniotic fluid includes decreased fetal movement, fetal growth restriction, fetal malformation and so on. 1. Decreased fetal movement: when amniotic fluid decreases, it may be caused by placental dysfunction. In order to ensure the blood supply to the brain and heart of the fetus, the fetal blood needs to be redistributed, which will show the symptom of decreased fetal movement. 2. Fetal growth restriction: When amniotic fluid decreases, the baby’s production and absorption of nutrients are imbalanced, resulting in growth restriction. 3. Fetal deformities: in early pregnancy, amniotic fluid can cause limb shortage; in middle and late pregnancy, the fetus can have hand and foot deformities, slanting neck, etc., and some of them will be stillborn in the uterus. Therefore, low amniotic fluid not only affects the fetus, but also has an impact on the mother, if there are symptoms of discomfort need to consult a doctor in time.