Narrowing of the cervical intervertebral space can cause cervical pain and limited range of motion in mild cases, and nerve compression can occur in more severe cases, such as numbness and pain in the upper limbs or weakness in the lower limbs. Because the middle of the cervical spine gap, are cervical disc gap narrowing indicates that there is degeneration of the intervertebral discs, or even serious herniated discs compressing the nerves. If the herniated disc compresses the nerve root, it will cause numbness in the upper limbs, i.e., nerve root type cervical spondylosis; compressing the spinal cord behind the spinal canal, i.e., spinal cord type cervical spondylosis, resulting in weakness of the lower limbs. Therefore, cervical spine gap narrowing is only a pathological change, not a diagnosis of the disease. Further cervical spine CT or MRI examination should be done to clarify the cause of the gap narrowing or the severity of the pathological change after the gap narrowing, and then combine it with the clinical symptoms shown so far to determine the specific characteristics of the disease and then choose the corresponding treatment plan.