Whether or not to have a painless injection for a normal birth is related to the individual woman’s pain tolerance level. If you can tolerate the pain you feel during labor, you can skip the injection. However, if you feel severe pain, have a low pain tolerance and cannot tolerate the pain of labor, it is necessary to have a painless injection. Note that painless injections should be given only when regular contractions occur. The advantage of painless injection is that it can effectively relieve the pain of contractions, and it also helps to increase the blood flow to the uterus, reduce the adverse effects caused by hyperventilation, and make the opening of the uterus relaxed and the opening of the cervix faster, so that the delivery can be smoother and the labor can be significantly shortened. There are also risks associated with painless injections, which may cause secondary contraction weakness, postpartum hemorrhage, urinary retention and other risks, and may also cause some stimulation to the nerves in the lumbar region, so be careful to avoid overloading the lumbar region after delivery to avoid chronic lumbosacral pain. In addition, besides the painless injection, it is also important for the mother to be mentally relaxed, so pay attention to the patient’s breathing adjustment during the delivery. When conditions allow, family members can accompany the mother to increase the sense of security.