Double uterus has no benefits but only bad effects, such as causing menstrual abnormalities, miscarriage, ectopic pregnancy, infertility, difficulty in labor and delivery, etc. Double uterus is a congenital abnormality of uterine development, which is hardly beneficial to the body, and the hazards of double uterus to the body are mainly manifested in the following aspects: 1. Abnormal menstruation: due to the increased area of the uterine lining, double uterus may cause heavy menstruation, prolonged menstruation, dribbling, dysmenorrhea and so on. 2. Miscarriage and infertility: the presence of uterine dysplasia in a twin uterus may lead to difficulty in conception, serious infertility, and the chance of miscarriage after pregnancy is higher than that of a normal person. 3. Ectopic pregnancy: Twin uterus may affect the normal development of fertilized egg, resulting in increased risk of ectopic pregnancy. 4. Difficulty in labor: most of the twin uterus is combined with cervical dysplasia and weak contractions, which leads to difficulty in cervical dilatation and abnormal force of labor, increasing the risk of obstructed labor and the chance of cesarean section, etc. If a twin uterus is not feeling well, it will be difficult to deliver. If you have a twin uterus, you need to go to the hospital in time for examination.