\”Episiotomy\” refers to \”episiotomy\”, which is to cut the perineum of vaginal mothers to facilitate delivery. There are many real reasons for mothers who need lateral incisions nowadays: modern mothers lack exercise, vaginal contraction is not strong enough, and the fetus cannot be delivered; some pregnant women are over-nourished, resulting in excessively large fetuses; these are the reasons for the prevalence of \”lateral incisions\”. If the mother does not move, the fetus will not undergo side incision during delivery. The fetus will come out of the uterus, pass through the vagina, and then fall to the ground. Even if it is a natural delivery, the midwife must decide whether to \”cut\” the mother\’s perineum based on the mother\’s condition. Although the vagina can be dilated, if the fetus is too large, the fetal head will