Whether a uterine malformation affects pregnancy depends on the severity of the malformation. Mild malformations do not affect pregnancy, but severe malformations may lead to infertility. Uterine malformations are structural changes in the uterus due to congenital abnormalities. Mild uterine malformations do not greatly affect pregnancy, and patients can conceive normally. However, severe malformations may cause problems such as difficulty in fertilizing the egg and failure to develop normally. Congenital uterine malformations cannot be avoided. It is advisable to seek medical attention if a uterine malformation is detected, and surgical treatment is recommended to facilitate a successful pregnancy.