A pregnancy that has reached or exceeded 42 weeks of gestation and has not yet been delivered is called a term pregnancy. The number of weeks of pregnancy is counted from the first day of the last menstrual period, and a pregnancy that has stopped menstruating for ≥42 weeks and has not yet given birth if the menstrual cycle is usually regular and lasts 28-30 days is diagnosed as an expired pregnancy. If the menstrual cycle exceeds 30 days, it should be postponed as appropriate. Due to the imbalance of the ratio of estrogen and progesterone in the pregnant woman’s body, or fetal malformation, the presence of anencephaly can lead to an untimely pregnancy. In addition, overdue pregnancy is related to insufficient secretion of adrenocorticotropic hormone in the fetus, while genetic factors can also cause overdue pregnancy. Overdue pregnancy has a great impact on both the fetus and the mother, and perinatal babies are prone to fetal overripening syndrome, fetal distress, meconium aspiration syndrome, neonatal asphyxia and macrosomia, etc. Meanwhile, it is prone to prolonging the labor process of the mother, increasing the rate of obstructed labor, and increasing the rate of surgical delivery and maternal injuries significantly. Therefore, termination of pregnancy should be considered after 41 weeks of gestation, and overdue pregnancy should be avoided as much as possible. If there are no complications after 41 weeks of gestation, such as hypertensive disorders of pregnancy, gestational diabetes mellitus, fetal growth restriction, low amniotic fluid, etc., close observation can be made and induced labor can be given to terminate the pregnancy. The mode of termination of pregnancy should be selected appropriately according to the comprehensive analysis of fetal safety and risk status, fetal size, and cervical ripeness.