The first stage of labor is from the time of regular contractions to the time when the opening of the cervix is 10㎝ wide. The progress of labor can be judged by the degree of dilatation of the cervical opening. When a woman is admitted to the hospital after labor, the doctor will do an obstetric examination, that is, an internal examination. The doctor wears sterile gloves after the vulva disinfection and enters the vagina to check the length of the cervix, the softness of the cervix, the position of the fetal head, the integrity of the fetal membranes, and to measure the degree of opening of the uterine orifice, which usually means the opening of the uterine orifice is a few centimeters, such as opening 1 finger means the opening of the uterine orifice is 1 cm, and opening 10 fingers means the opening of the uterine orifice is 10 cm, and generally the progress of labor can be predicted according to the degree of opening of the uterine orifice. The specific details are as follows: 1. 1 finger: when the opening of the uterus is 1 finger, it means that the mother is in labor and can go to the hospital to prepare for delivery; 2. 3 fingers: when the opening of the uterus is 3 fingers, usually the mother can prepare to enter the waiting room for delivery, midwives and physicians will closely detect the progress of labor and fetal heart condition, and timely deal with abnormalities in labor; 3. 10 fingers: when the opening of the uterus is 10 fingers, that is, fully open, at this time, labor begins, and the fetus will be delivered soon. The baby will be delivered soon.