To understand what is the nerve root canal, the nerve root canal mainly refers to the nerve root from the dural sac, through the lateral saphenous fossa and then through the intervertebral foramen, this channel is called the nerve root canal. Nerve root canal stenosis mainly includes bony stenosis and soft tissue stenosis caused by herniated discs and hypertrophy of ligamentum flavum, for both kinds of stenosis, according to the severity of the disease, conservative treatment and surgical treatment can be taken. Conservative treatment is neurotrophic and neurodehydration medication. If the herniated disc is large, the nerve impingement is serious, and the hyperplasia or cohesion of the small joints is serious, surgical treatment is needed in these two cases.