Throughout a painless delivery, two injections are usually required, one for anesthesia and one for puncture. However, if the anesthesia does not go well, a second operation may also be required. Generally, after the mother signs the informed consent form and maintains the appropriate position and posture as prescribed by the doctor, the anesthesiologist will administer a shot of local anesthetic at the puncture site and then perform a puncture in the lumbar spinal space. After the successful puncture, a small amount of local anesthetic or opioid is injected into the subarachnoid space and a thin catheter is left in the epidural space connected to an electronic analgesic pump, which can control the drug administration according to the pain level and can effectively relieve the pain caused by It is effective in relieving pain caused by uterine contractions during labor. Therefore, if there are no contraindications to vaginal delivery, contraindications to intrathecal anesthesia, or abnormal coagulation, pregnant women can choose painless delivery methods according to their needs. However, it should be noted that painless delivery is usually performed when the opening of the uterus is 2-3 cm, and not during the whole labor. If the mother is in a state of tension, fear, anxiety and low confidence, it will also increase the sensitivity to pain, so being mentally prepared is also one of the ways to reduce pain.