Lumbar nerve injury, generally seen in the lumbar spine fracture and nerve injury, but also may be a sharp knife stab injury resulting in nerve injury. Timely improvement of the magnetic resonance examination of the lumbar spine to accurately determine the degree of lumbar nerve injury, in addition to the specific cause and segment. For lumbar vertebral fracture and lumbar nerve injury, surgical treatment should be considered to completely relieve the nerve compression, then with nerve nourishing drugs, such as methylcobalamin, rat nerve growth factor, and also with acupuncture, electrical stimulation, in addition to blood circulation and blood stasis drugs, such as blood circulation and pain capsules. If it is a knife or other sharp instrument injury, surgery is needed to do the repair, and then actively cooperate with nerve-nourishing drugs after surgery. It takes several months to recover from a lumbar nerve injury, and it is not always possible to recover completely.