Bilateral fetal choroid plexus cysts generally have no significant impact on the fetus, and more than 90% of them can resolve spontaneously and have no pathological significance after resolution, and basically have no impact on subsequent fetal growth and development. Only a few of them show progressive enlargement, and the cause needs to be identified, treated and managed. If a fetus with bilateral choroid plexus cysts disappears on its own around 26 weeks of pregnancy, there is usually no pressure or increased cranial pressure, and the intelligence or other aspects of the fetus will not be affected by the choroid plexus cysts after birth. If they do not disappear after 26 weeks and are bilateral, a 4D ultrasound or amniocentesis can be done to check the development of the fetus, and if the fetus is not accompanied by other developmental abnormalities, the pregnancy can continue; if there are serious developmental abnormalities that affect the quality of survival of the fetus after birth, termination of pregnancy should be considered. If choroid plexus cysts are still present after birth, they may compress the brain nerves and cause developmental backwardness. Cranial examination and chromosomal examination of umbilical cord blood cells are needed to actively treat the fetus and improve the prognosis. Simple bilateral fetal choroid plexus cysts often have no clear pathological significance and a good prognosis, but the condition is associated with an increased risk of chromosomal abnormalities (trisomy 18, trisomy 21), and prompt prenatal diagnosis is recommended to test the fetal chromosomes.