Early pregnancy B-ultrasound to see the gender – understand the accuracy and method of fetal gender identification in early pregnancy. With the continuous development of science and technology, people have a deeper and deeper understanding of the fetus. In the early stages of pregnancy, the gender of the fetus can also be identified through B-ultrasound. When this method first appeared, it was quickly welcomed by parents. They can learn the gender of the fetus earlier and prepare for the baby\’s life in advance. But every method has shortcomings and errors, so we need to have a clearer understanding of the accuracy and methods of early fetal gender identification. This article will elaborate on the following aspects in detail.