For the lumbar disc herniation, according to its severity is divided into the following three levels: 1, the mildest kind of lumbar disc herniation is called lumbar disc bulge, lumbar disc bulge indicates that the lumbar disc is only very slightly protruding backwards, triggering the symptoms of nerve root compression and spinal cord compression symptoms are the mildest, and most of them can achieve good therapeutic results through conservative treatment. 2, lumbar disc herniation. The majority of lumbar disc herniation can be cured by conservative treatment, only a very small number need to do surgery. 3, lumbar disc prolapse, this is the most serious type, generally need to do surgery.