Lumbar disc herniation cannot be judged by foot numbness and pain alone to determine the severity, because foot numbness and pain are manifested in the middle and late stages of lumbar disc herniation, which of course indicates that the lumbar disc herniation is somewhat serious. Lumbar disc herniation in the mild mostly manifested as back pain, generally no other symptoms; in the moderate period, the disc will be detached from the original position, so the back pain will occasionally be accompanied by radiating pain or numbness of the legs, and can not be prolonged sitting or strenuous exercise; in the severe period of lumbar disc herniation is serious, it will compress the nerves, the lower back pain, accompanied by persistent mild to moderate pain or numbness of the lower limbs, and severe paralysis of the lower limbs. If the above symptoms occur, it is recommended to go to the hospital in time.