4D ultrasound shows that all the indicators are in line, but the amniotic fluid is low you can drink more water and soy milk to increase the amount of amniotic fluid. The intrauterine condition of the fetus should also be monitored. When doing 4D ultrasound, if the ultrasound suggests that all the indicators of the pregnant woman and the fetus meet the requirements. When the amount of amniotic fluid is low, you can drink more water and soy milk. In addition to this you can also eat more food containing vitamins and high protein, such as fresh vegetables and fruits, milk and so on. Pay attention to rest, mainly lying on the left side. In case of low amniotic fluid volume in pregnant women, further chromosomal examination is recommended to rule out fetal abnormalities. To check the amniotic fluid volume regularly, you also need to pay attention to monitoring the intrauterine condition of the fetus, such as fetal heart rate monitoring and umbilical blood flow ratio. If frequent fetal movements or decreased fetal movements are detected, it is necessary to be alert to the possibility of intrauterine hypoxia of the fetus, and timely medical attention should be sought.