The claim that choroid plexus cysts are not associated with fetal intelligence lacks scientific basis and is not credible. In fact, a choroid plexus cyst is an ultrasound soft indicator of a cyst caused by cerebrospinal fluid filling the neuroepithelial folds. The typical ultrasound imaging presentation is a small (usually less than 1 cm), well-defined, anechoic structure located within the choroid plexus that may appear in a variety of presentations, ranging from a unilateral solitary cyst to a bilaterally separated multiple cyst. The detection of choroid plexus cysts suggests a mildly increased risk of fetal chromosomal abnormalities. 30-50% of fetuses with trisomy 18 will have choroid plexus cysts, whereas only 1-3% of all mid-term pregnancies will have this condition. Therefore, fetuses with detected choroid plexus cysts need to undergo a thorough ultrasound anatomical examination to guide further counseling and evaluation, especially fetal karyotyping. In the absence of other central nervous system abnormalities or other structural abnormalities, and in the absence of chromosomal aneuploidy risk factors, a simple choroid plexus cyst can be considered a normal variant, regardless of its shape, size, or whether it is biased to one side or the other, and usually disappears by late gestation, even if it persists it is mostly asymptomatic and benign. Therefore, the rumor that fetuses with choroid plexus cysts are smart should not be believed, and once such a condition is detected, a detailed examination must be performed so that one’s misconceptions do not lead to serious diseases such as hydrocephalus after the birth of the child.