CT of the cervical spine can check the following conditions: 1, congenital deformities of the cervical spine can be observed: when CT observes the structure of bone and soft tissue, it can clarify the congenital deformities of the cervical spine and measure various deformities to guide the clinician’s treatment; 2, clarify cervical fractures and dislocations: CT can accurately observe the fractures of the cervical spine and the protrusion of fracture fragments into the spinal canal, intervertebral foramen or transverse foramen, and can especially 3.Diagnosis of cervical spondylosis: CT can directly show cervical spine osteophytes, ligament calcification, cervical disc protrusion and the degree of compression of the dural sac and nerve roots; 4.Diagnosis of cervical spine stenosis: CT is a more accurate method to diagnose and locate spinal stenosis, and it can measure the diameter and area of the spinal canal, observe the morphology of the spinal canal, and understand the condition of its bone and soft tissue. 5.Observation of tumor and inflammation of cervical spine: CT can clearly diagnose the extent of tumor lesion, the condition of vertebral body and accessories, and whether the lesion invades the spinal canal and intervertebral foramen, whether there is a paravertebral mass and the blood supply of the mass, etc.