In general, the expected date of labor is 40 weeks of pregnancy. If the pregnancy checkup is normal, no gestational diabetes, gestational hypertension, etc., and the ultrasound indicates that the amniotic fluid is normal but there is still no sign of labor after 40 weeks, then it can be observed for the time being. However, if the pregnancy exceeds 41 weeks, you will need to be hospitalized in the obstetrics and gynecology department to induce labor, depending on your personal situation. The expected date of delivery is an approximate time of labor, in the case of determining the correct expected date of delivery, as the pregnancy exceeds 40 weeks the function of the placenta will gradually decline, up to 42 weeks the function of the placenta will decline will be very obvious. Since delayed pregnancy can easily lead to intrauterine hypoxia or hardening of the fetal head, it is recommended to go to the Obstetrics and Gynecology Department of the hospital at 41 weeks of pregnancy for ultrasound, amniotic fluid and fetal heart rate monitoring, and then plan for delivery according to the results of the examination. However, if the mother has a pre-existing disease such as gestational hypertension or gestational diabetes, it is recommended to go to the hospital’s Obstetrics and Gynecology Department as soon as possible to wait for the delivery. In conclusion, pregnant women can wait for about a week after the due date, during which time they can increase nipple stimulation to stimulate the uterus to trigger labor, and at the same time, pay attention to increasing the frequency of labor checkups and follow the doctor’s instructions.