How long it takes to induce labor in the first pregnancy cannot be determined, it can take from a few hours to tens of hours, sometimes days for oxytocin-insensitive people, and even failure to induce labor is possible. Methods of labor induction include medication and exercise. Exercise is generally not indicated in patients with premature rupture of membranes to prevent prolapse of the umbilical cord. Pharmacologic labor induction includes oxytocin and prostaglandin preparations such as dinoprostenone suppositories. Labor can also be induced by cervical placement of a dilatation balloon. Prostaglandin preparations and water bladders are usually indicated in patients with a cervical score of less than 7 and are used to promote cervical ripening. Once the cervix is ripe, the use of oxytocin to induce labor can improve the success rate of labor induction. In addition, labor is not only related to cervical conditions, but also to the size of the fetus and whether the mother’s pelvis is proportional to the size of the fetus, if there is cephalopelvic disproportion or fetal heartbeat abnormalities, or even need emergency surgery to terminate the pregnancy. When a pregnant woman is in labor and needs to be induced, she needs to be examined by a doctor and under the doctor’s supervision.