In pregnant women with adenomyosis, there are two risk periods during pregnancy, namely the early pregnancy and the delivery period. Usually the first risk period is passed at 12 weeks of pregnancy and enters a safe period. However, from the time of delivery until the placenta is completely delivered, the risk period can be faced again. The poor intrauterine environment of women with adenomyosis can affect the normal fertilization of the egg, and even after the fertilization of the egg, early pregnancy may cause fetal abortion and preterm abortion. However, after 12 weeks of pregnancy, the gestational sac is firmly attached and miscarriage is not likely to occur. Therefore, after 12 weeks of pregnancy, the risk period is passed into a safe period and continues until the second trimester. During delivery, adenomyosis may cause abnormal placental attachment, such as placental adhesions and placental implantation, leading to placental retention and postpartum hemorrhage, which is more critical. Pregnant women with adenomyosis need regular pregnancy checkups, bed rest is recommended in early pregnancy to minimize the amount of activity to avoid inducing miscarriage, while early arrival at the hospital for delivery is recommended in late pregnancy.