A congenital uterine abnormality may be dangerous in pregnancy, increasing the chances of miscarriage, preterm labor, and fetal malposition in the course of pregnancy. A normal uterus is oval in shape, like an inverted pear. The paramedian tubes on both sides of the uterus are affected and interfered by certain factors during fetal development, and stop developing at different stages of evolution, resulting in the formation of various developmental abnormalities of the uterus, which are congenital uterine anomalies, such as double uterus, unicornuate uterus, and bicornuate uterus. The fetus needs a certain amount of space to grow and develop in the uterus. In patients with congenital uterine anomalies, the uterine volume is not large enough, and the fetus is at risk of miscarriage and preterm delivery during its growth and development. Fetus in the uterus in the development of space is relatively small, may appear breech position, rather than the normal head down, the chances of delivery of the fetus is difficult to deliver, serious may jeopardize the safety of mothers and children, this situation requires cesarean section delivery of the fetus. Congenital uterine anomalies after diagnosis of pregnancy first observation, there are abnormalities in time to deal with.