The general opening of the uterus two fingers is the natural period of labor, on behalf of the labor process has just begun, until the opening of the ten fingers to start labor, and from the opening of the uterus two fingers to full delivery, that is, the delivery of the placenta, a total of three births, from the opening of the two fingers to the birth, generally primigravida need about 11-12 hours, after the mother needs about 6-8 hours. 1, the first stage of labor: when the uterus began to contract regularly to the opening of the uterus is full of the The first stage of labor. The time needed for labor is different for different people, about 11-12 hours for primigravid women and 6-8 hours for menstruating women. The opening of the uterus to two fingers indicates that the woman is officially in labor and is in the first stage of labor, it is necessary to carry out a vaginal examination once every four hours to determine whether the opening of the uterus is in line with the normal course of labor, if there is a prolongation of the process of labor or the process of labor stagnation, we must further find out the reasons for the active treatment. 2, the second stage of labor: the uterine mouth is open full that is, the opening of the 10th finger to enter the second stage of labor, the second stage of labor is also referred to as the period of delivery of the baby, the primiparaeontal mothers generally need 1-2 hours, the transient women usually a few minutes. The second stage of labor, also known as the delivery of the fetus, usually takes 1-2 hours for a primiparous woman, and usually takes a few minutes for a transient woman, but can take up to an hour.3. The third stage of labor, also known as the placenta delivery stage, takes 5-15 minutes from the delivery of the fetus to the delivery of the placenta, and should not take more than 30 minutes. After the delivery of the fetus, contractions still prompt the placenta to deliver, and then the doctor will clean up for the mother, and will make a local stitches for any vulvar lacerations.