Regular contractions are formed once every 5-6 minutes, usually around 10 hours for primiparous women and less than 10 hours for menstruating women, with individual differences. It takes about 10 hours from the formation of regular contractions to the full opening of the uterus in primiparous women. When the opening of the uterus is more than 3 fingers, the mother needs to enter the delivery room for delivery. The fetus is delivered in about 2 hours after the opening of the uterus. The delivery time for women in labor is shorter, usually less than 10 hours. The exact delivery time depends on the woman’s physical condition, the size of the fetus, the maturity of the cervix and other factors. For example, if the opening of the uterus dilates quickly, the delivery time will be earlier, while some women may have a slow progress after the opening of the uterus is 2-3 cm, and then the delivery time will be delayed. Proper movement of the mother can shorten the time to full opening of the uterus and facilitate the delivery of the fetus. Fetal heart monitoring is also needed in case of weak contractions, etc.