The indications for cervical spine fusion surgery include cervical spine fracture with instability, cervical spine herniation with vertebral body slippage, and spinal cord cervical spondylosis. 1. Cervical spine fracture with instability: For trauma-induced cervical spine fracture, when combined with vertebral subluxation and nerve injury, cervical spine fusion surgery is required according to the condition. 2. Cervical herniation with vertebral body slippage: When cervical herniation is accompanied by vertebral body slippage, or cervical disc herniation causes spinal stenosis, etc., it is necessary to remove the herniated disc and stabilize the vertebral body through fusion treatment, so as to improve the symptoms of discomfort in the neck or upper limbs. 3. Spinal cord cervical spondylosis: Surgery is required for most spinal cord cervical spondylosis to remove the herniated disc and improve the compressed spinal cord, thus restoring the function of the spinal cord. Cervical fusion surgery is divided into anterior, posterior or combined anterior and posterior cervical fusion, which can be used for different types of cervical spondylosis. Specific surgical methods and indications should be based on the patient’s own condition and should be evaluated by a specialist before determining a specific treatment plan.