Although painless delivery is still a novelty in China, it has been widely used in foreign countries and mothers-to-be can enjoy painless delivery with confidence. The mother-to-be does not need to go into the operating room, and if necessary, she can meet the need for surgery, shorten the labor process, reduce the rate of cesarean delivery and postpartum bleeding, and increase the rate of vaginal delivery. 1.Safety: painless delivery is commonly used with epidural anesthesia, the doctor places a drug tube in the epidural cavity of the mother’s waist, the concentration of anesthesia in the tube is about one-fifth or less than that of a cesarean section, i.e. a light anesthetic, which is very safe; 2.Widely suitable for the population: most pregnant women are suitable for painless delivery, but if they have drug allergy, history of trauma to the waist, contraindication to vaginal delivery, contraindication to anesthesia and people with 3. Avoid movement block, do not affect contractions and maternal movement: reduce unnecessary maternal oxygen consumption and energy consumption, improve placental blood flow, prevent the occurrence of metabolic acidosis in mother and baby, improve the speed of labor progress, reduce the rate of postpartum bleeding, avoid the reduction of uteroplacental blood flow, thus improving the fetal oxygen status and reducing the chance of fetal hypoxia and neonatal asphyxia. This improves fetal oxygen status and reduces the chance of fetal hypoxia and neonatal asphyxia.