A scientific introduction to identifying the gender of the fetus by the shape of the gestational sac. With the development of science and technology, many pregnant women are very concerned about the gender of the fetus after pregnancy. The shape of the gestational sac to identify the gender of the fetus has become a popular method and has attracted much attention. Let’s take a look at the science of this method through the following four aspects. Aspect 1: Application of gestational sac shape in fetal gender identification. Fetal gender identification by gestational sac shape is a method that uses gestational sac shape to determine fetal gender. This method is performed during B-ultrasound examination, through the display of B-ultrasound images