Indications of episiotomy: 1. If the perineal body is found to be particularly high during labor, it will inevitably cause second-degree laceration of the perineum or more serious third-degree laceration without lateral incision, and then it is necessary to perform episiotomy, and the situation of causing more serious laceration of the perineum will be reduced after performing this operation when the perineal body is particularly high. 2. Because of intrauterine distress of the fetus during the second stage of labor. If the fetal heart rate slows down or speeds up significantly, if the baby is not delivered within a short period of time, the life of the baby will be threatened, so an episiotomy should be performed to end the second stage of labor as soon as possible. 3. If the amniotic fluid is found to be cloudy, especially if there is a fetal bowel movement, in order to end the labor as soon as possible to make sure that the baby doesn’t inhale the contaminated amniotic fluid, a lateral incision is performed as soon as possible to end the second stage of labor.