In hospital visits, cervical spine radiographs are generally performed, including orthogonal and lateral radiographs, and if further examination is required, double oblique radiographs and hyperextension and hyperflexion radiographs are done to observe the state of the entire cervical spine. The following conditions can be observed on the X-ray film: ① Whether there is abnormal alignment of the cervical vertebrae. For example, the anterior convexity of the cervical vertebrae disappears, or is even retroflexed. (ii) Whether there is instability of the cervical vertebrae, i.e., slippage between vertebrae (usually no more than 3 mm). ③Whether there is osteophyte growth and the site of the growth. The size of the bone spur and its relationship to the surrounding structures. ④Whether there is narrowing of the intervertebral space and reduction of the nerve root foramen. In some cases, hyperplasia and outward extension of the hook and cone joint can be observed, which can easily lead to compression of the vertebral artery. ⑤ Whether there is narrowing of the cervical spinal canal. Generally, the anterior-posterior diameter of the spinal canal in normal people is not less than 13 mm, or the ratio of the anterior-posterior diameter of the spinal canal to the anterior-posterior diameter of the vertebral body is not less than 0.75. (6) Whether the distance between the spinous processes of the cervical spine is abnormal. If the interspinous distance between the two vertebrae is significantly increased or decreased, it is pathological. (7) We can also observe whether the posterior longitudinal ligament and the yellow ligament of the cervical spine are ossified and changed. Some of them are continuously ossified, while others are intermittently ossified. Through the above X-ray observation, doctors can generally understand the location of cervical spine lesions and interpret the clinical manifestations on this basis. If the interpretation is not complete, further examination, such as CT, MRI or digital imaging, is required.