The delivery of fetal head is the most important step in the delivery process. When the fetal head is about to be delivered through vagina, due to the continuous decline of the fetal head, the vaginal opening and surrounding tissues are compressed, showing local swelling, thinning and even luster. At this time, if the perineum is not protected, not only the perineum may tear, but even it will tear all the way to the anus. Because of getting angry or the hot weather, the stool is easy to dry, which can also lead to perineum tearing. Because of inflammation, the vagina is easy to dry and lose elasticity, and the perineum is easy to be injured or even torn when in the same room. When the fetal head is about to be delivered, one of the important things that medical staff must pay attention to during the labor process is to protect the perineum. If the medical staff think that the parturient may have perineal tear, they will perform perineal lateral incision for the parturient. After the lateral incision, the midwife can help the fetus to be delivered slowly with the contraction of the uterus, and then suture the incision after the fetus is delivered. This can not only prevent perineum from tearing, but also prevent fetal head from being damaged due to long-term compression. When the fetal head is delivered, the parturient should slow down the delivery speed. If the delivery speed is too fast, it will be too late to protect the perineum. At this time, the parturient should cooperate closely with doctors and midwives, and the most important thing is to master breathing. When the uterus begins to contract, the parturient should follow the following steps: fold the legs apart, and relax the waist as much as possible, without exertion. Relax your limbs, grab both sides of the delivery bed with your hands, open your mouth slightly and breathe with your mouth open. Life comes from beauty. Let your life be more beautiful from now on. Let us know that the plastic surgery hospital will accompany you into a wonderful life.