Symptoms of cervical spinal stenosis include the following: first, sensory impairment, mainly manifested as numbness, hypersensitivity, pain in the limbs, most patients have the above symptoms, and for the onset of symptoms, mainly due to the involvement of spinal thalamus tracts and other sensory nerve fiber bundles. All four limbs can be onset at the same time, or one side of the limbs first symptoms, but most patients with sensory deficits first from the upper limbs. Trunk symptoms below the second or fourth rib sensory deficits, tightness in the chest, abdomen or pelvic area, and in severe cases, dyspnea may occur; secondly, motor deficits, which most often appear after the sensory deficits, manifested as the cone-bundle sign, limb weakness, stiffness and inflexibility. Most of the lower limbs from the weakness, heavy, feet on the ground like stepping on cotton feeling to start, the heavy walking unsteady, easy to kneel, need to support the wall or crutches to walk, with the gradual aggravation of the symptoms appeared quadriplegia; third, urinary and fecal dysfunction, usually appear later, the early stage for the weakness of urinary and fecal, the late stage can be urinary retention, urinary and fecal incontinence.