Usually, labor occurs in the 9th to 10th month of pregnancy, and if labor occurs beyond the 10th month plus 2 weekends, it is considered an overdue pregnancy. Normal pregnant women will give birth between 9 and 10 months of pregnancy, but the exact time is not fixed due to the time of fertilized egg implantation and the physical condition of pregnant women. Generally speaking, if the placenta is functioning normally, the fetus is developing normally and the pregnant woman is healthy, there is no need to worry too much and just wait for natural labor to start. Clinically, the phenomenon of more than 10 months plus 2 weekends of labor is called overdue pregnancy. Overdue pregnancy is mainly related to estrogen and progesterone imbalance, obesity, genetics and other factors. In the late stages of pregnancy, pregnant women should learn to count the fetal movement, in order to monitor whether the fetus is abnormal, should also be on time to see a doctor for obstetric examination. It is recommended to pay attention to the rationality of diet and appropriate exercise during pregnancy, but should avoid overwork. When symptoms such as regular contractions and vaginal bleeding occur in late pregnancy, women should seek medical attention for delivery.