Which patients with cervical spondylosis need surgery (indications): (1) The diagnosis of spinal cord cervical spondylosis is clear, and the symptoms and signs are not relieved but gradually aggravated by non-surgical treatment. (2) In spinal cord cervical spondylosis, if the symptoms and signs are progressively aggravated clinically or are acutely aggravated within a short period of time, there is no need to delay and surgery is performed as early as possible. (3) Sudden cervical spondylosis or induced by trauma, resulting in tetraplegia. (4) Mixed cervical spondylosis with spinal cord and nerve root compression, with severe symptoms that affect life and workers. (5) Cervical spine disc herniation combined with obvious spinal cord compression symptoms. (6) Cervical spine trauma causing disc herniation with spinal cord and nerve root injury or severe pain in the neck, or cervical spine instability although not accompanied by symptoms of nerve compression. (1) Patients with cervical spondylosis cannot undergo surgery (contraindication): (1) Poor general condition, or combined with important organ disorders, cannot withstand surgical trauma. (2) Long duration of cervical spondylosis, combined with tetraplegia muscle atrophy and joint stiffness, indicating serious damage to the spinal cord, even if decompression, the spinal cord function is difficult to restore. (3) The diagnosis is unknown, and although there are similar symptoms of cervical spondylosis, the imaging and neurological examination are doubtful for surgery.