Leg numbness resulting from a lumbar disc herniation can be recovered with proper treatment. After producing a lumbar disc herniation, if the degree is relatively mild, although it causes leg numbness, that is, the formation of sciatica symptoms, the sciatic nerve damage can be recovered after proper conservative treatment. At this time, it is necessary to strictly lie flat on a hard bed, and then do lumbar spine three-dimensional computer traction, the purpose of which is to make the herniated lumbar disc no longer compress the nerve root through the effect of traction, so that the herniated disc can be returned and retracted as much as possible. At the same time, dehydrating drugs such as mannitol and neurotrophic drugs such as methylcobalamin tablets can be used. If the lumbar disc herniation is particularly serious and reaches the level of lumbar disc prolapse, surgical treatment to remove the prolapsed disc can also restore the symptoms of leg numbness.