Lateral incision is not necessary for a normal delivery. Lateral incision is a measure taken by the doctor to prevent serious perineal tearing in case of abnormalities during a normal vaginal delivery, and it is not a routine operation for a normal delivery, so lateral incision is not necessary for a normal delivery. Lateral perineal incision is mainly used in forceps, breech delivery, head-up suction, when the central tendon of the perineum is too long or too tight in order to prevent severe perineal tearing, when the second stage of labor is too long or the fetus is asphyxiated in order to shorten the duration of the labor, and to prevent intracranial hemorrhage of the fetus in preterm labor, etc., but whether or not to use lateral perineal incision depends on the circumstances of the labor process. Breech assisted labor and fetal head attraction, and nowadays most of them are sutured with absorbable sutures that do not need to be removed. The decision to perform a lateral incision should be made by your doctor based on the specific circumstances of your labor, and is not always necessary.