1.Cervical spine X-ray: X-ray of cervical spine disease often shows the disappearance of the normal physiological curvature of the cervical spine or reversion, narrowing of the intervertebral space, narrowing of the spinal canal, formation of bone superfluous at the posterior edge of the vertebral body, and segmental instability of the cervical spine can also be observed in the hyperextension and hyperflexion of the cervical spine. 2.CT of cervical spine: the hyperplastic calcification of cervical spine can be observed more clearly, and it has a clear diagnostic value for spinal stenosis and vertebral body posterior edge bone superfluous formation. 3, cervical MRI: can clearly observe the herniated disc compressing the spinal cord, and is routinely used as evidence of preoperative imaging to clarify the segment and resection range of surgery. 4.Vertebral-basilar artery Doppler: It is used to detect the blood flow of vertebral artery and can also observe the travel of vertebral artery, and it has a high value for the identification of patients with vertigo as the main symptom. 5.Electromyography: It is suitable for patients with muscle weakness as the main manifestation. The main purpose is to clarify the localization of the diseased nerve and to differentiate it from neurological diseases such as lateral sclerosis and neurodegeneration, but the examination conditions are demanding and false-positive results often occur.