The severity of undisplayed fetal gallbladder depends on the patient’s condition; some patients are not serious and some patients are relatively serious. During pregnancy, the gallbladder of the fetus may increase with the growth and development of the fetus, if the gestational week of the fetus is relatively small during ultrasound examination, the gallbladder may not be shown in ultrasound; some fetuses may not show the gallbladder during ultrasound examination due to the position of the fetus, the failure of the gallbladder to be shown in ultrasound examination in the fetus caused by the above circumstances is not serious. If the gallbladder does not show up due to congenital absence of the gallbladder, small gallbladder development and other pathological conditions, it suggests that there are abnormalities in the development of the fetus, which is a relatively serious situation. When the fetal ultrasound examination shows abnormalities, the patient should seek prompt medical attention to clarify the cause of the disease and treat it as soon as possible to avoid adverse pregnancy outcomes.