Twin pregnancies are multiple pregnancies that are pathologic. Twin pregnancies can be carried to full term in some cases, but the condition of the mother and the fetus need to be taken into account. The full term of pregnancy is between 37 and 42 weeks, and the timing of delivery varies depending on the condition of the mother and the fetus. In uncomplicated and uncomplicated twin chorionic twin pregnancies, delivery can be expected up to 38 weeks of gestation and no later than 39 weeks. In uncomplicated monochorionic amniotic sac twins, labor can be expected until 35 to 37 weeks of gestation with close monitoring. For monochorionic, monoamniotic bursa twins, the gestational week of delivery is 32 to 34 weeks. For complicated twin pregnancies with complications such as gestational hypertension, pregnancy complicated by twin transfusion syndrome, etc., different delivery options need to be decided depending on the condition of the mother and the fetus. Twin pregnant women must regularly go to the hospital for checkups, supplement adequate nutrition, reduce the amount of activity, timely prevention and treatment of pregnancy complications, and closely monitor the growth and development of the fetus and changes in fetal position.