Pregnant women with adenomyosis have two periods of risk throughout their pregnancy: early pregnancy and labor. The first danger period is usually passed at 12 weeks of pregnancy and a safe period is reached. However, from the onset of labor until the placenta is completely delivered, the risk period is again faced. The intrauterine environment of women with adenomyosis is poor, which may affect the normal fertilization of the egg, and even if the fertilized egg is fertilized, it may cause fetal arrest and preterm miscarriage in the early stages of pregnancy. However, after 12 weeks of pregnancy, the gestational sac is firmly attached and is not prone to miscarriage. Therefore, after 12 weeks of pregnancy through the dangerous period into the safe period, and continue to the second trimester. In addition, women with adenomyosis may have abnormal placental attachment during delivery, such as placental adhesions and implantation, leading to retained placenta and postpartum hemorrhage, which is a more critical situation. It is recommended that pregnant women with adenomyosis undergo regular pregnancy checkups, and in the early stages of pregnancy, bed rest is recommended to minimize the amount of activity in order to avoid triggering a miscarriage, while in the later stages of pregnancy, it is recommended to go to the hospital in advance to wait for the birth of the baby.