Normally, a pregnancy is considered full term when it reaches 37 weeks or less than 42 weeks, regardless of whether it is a singleton or twin pregnancy. Both twins and singletons need to reach 37 weeks to be judged as full term and can start delivery at any time after full term. The total volume of twin pregnancies is larger than that of singleton pregnancies, and some pregnancies may be born prematurely due to premature rupture of membranes or due to excessive tension in the uterus, resulting in early birth of the baby. The twin pregnancy is unique and it is usually difficult to wait until full term delivery. In addition, different types of twin pregnancies require different monitoring during pregnancy and early termination of pregnancy if intrauterine hypoxia is detected or if continuation of pregnancy may lead to life threatening conditions. In general, in the case of uncomplicated twin chorionic fetuses, delivery can be considered until 38 weeks of gestation. Since twin pregnancies are high-risk pregnancies, the number of obstetric examinations needs to be increased accordingly and active medical consultation should be made if discomfort is detected. At the same time, pregnant women should pay attention to avoid straining and not to lift heavy objects in order to avoid adverse effects.