Numbness instead of pain is normal during the recovery period of lumbar disc herniation, indicating that nerve root compression has been lifted and nerve function is gradually recovering. Many patients can get relief from low back and leg pain immediately after lumbar intervertebral disc surgery, but the numbness symptom may not be relieved so quickly, which is often seen in some patients with longer course of the disease, and in fact, this is the basic feature of the process of sensory nerve fiber recovery. Generally speaking, most patients can recover gradually within 3 months to 6 months with the use of nutritive nerve medication and appropriate functional limb exercises after surgery. If the recovery period of lumbar disc herniation does not hurt but numbness does not improve for a long time, it is recommended to go to the hospital in a timely manner to improve the examination, to clarify the degree of nerve compression, to give targeted treatment or therapy.