Childbirth anesthesia needle, that is, painless delivery and cesarean section anesthesia needle, diameter of about 2mm. Usually painless labor and cesarean section of the anesthesia is intrathecal anesthesia, including epidural anesthesia and lumbar anesthesia, epidural needle length 8 cm, epidural needle than simple lumbar anesthesia needle to be a little bit thicker, diameter of about 2mm, can be placed in the tube, easy to continue to give the drug, the general size of the normal maternal body puncture into the length of the needle 4 to 6 centimeters, the obese maternal patients need to be 8 centimeters. Simple lumbar anesthesia needle length of 10 centimeters, the length of the needle and epidural needle is similar, because epidural anesthesia and lumbar anesthesia is only a layer of dura mater. It should be noted that, during the puncture, strictly cooperate with the doctor said so steps, do not move or twist the body.