A small unicornuate uterus can still prepare for pregnancy, but the chances of getting pregnant will be reduced, and the chances of intrauterine growth retardation, fetal malformation, mid-term miscarriage, and preterm labor will be increased after pregnancy. A unicornuate uterus is half of a normal uterus. It is a condition in which one side of the paramesonephric duct completely disappears during the development of the embryo and the other side develops normally, resulting in the absence of reproductive organs on one side. Women with a small unicornuate uterus can prepare for pregnancy by taking folic acid tablets, avoiding smoking and drinking, exercising properly, paying attention to nutritional supplements, and choosing to arrange intercourse when the woman is ovulating, but it is not always possible to get pregnant, and the chances of getting pregnant with a small unicornuate uterus are relatively small. If a woman with a small unicornuate uterus conceives successfully, she may experience intrauterine growth retardation, which increases the chances of abnormal development of the fetus. As the fetus develops, the uterus will gradually expand, making it difficult to support the weight of the fetus, which may increase the chances of miscarriage, preterm labor, or in severe cases, uterine rupture. Women with a small unicornuate uterus are advised to go to the hospital for a checkup so that the doctor can determine whether it is suitable for pregnancy preparation.