Lumbar anesthesia refers to intraspinal anesthesia, which is divided into epidural anesthesia and spinal anesthesia. Both anesthesia is through the local anesthetic drugs acting in the epidural cavity or subarachnoid space, the spinal cord nerve roots anesthesia. Nowadays, the drugs have a certain period of action, and they are all reversible, so as long as they are used wisely, they are basically very safe. Usually after 4-6 hours, perception is slowly restored. Perceptual recovery begins with motor recovery, followed by sensory recovery, which occurs in a different order. It is possible that with a longer duration of action, perceptual recovery will be slower. If a catheter is placed in the spinal canal, i.e., an epidural catheter is placed for continuous postoperative analgesia, this can also lead to numbness in the patient’s lower extremities that may occur. As long as the numbness is normal and does not suddenly worsen or other sharp onset of back pain, it is safe. The anesthesiologist will also conduct postoperative follow-up to ensure that serious complications are avoided.