Cervical 2-3 vertebral body fusion is one of the common deformities of the cervical spine, which usually has cosmetic changes, nerve damage, activity limitation, and spinal cord compression symptoms. 1. Neck appearance deformity and posterior hairline: Cervical 2-3 vertebral body fusion may appear as a short neck, and a short neck may lead to having a posterior hairline, which is not easy to be detected when not observing carefully. 2. Nerve damage: If there is no nerve damage in the early stage, neck pain or symptoms of spinal cord or nerve root damage may appear after middle age, and a few patients may also present acute onset after mild trauma to the neck. 3. Restriction of neck movement: the range of restricted movement of patients is proportional to the length of cervical fusion. In general, patients have only mild limitation, which has little effect on neck flexion, but more effect on side bending and rotation. 4. When cervical 2-3 vertebrae are fused, symptoms of spinal cord compression may occur in the early stage, which may be manifested as inflexibility of the upper limbs, sensory abnormalities of the trunk, numbness of the lower limbs, and the feeling of cotton on the feet when walking, etc. The patient is recommended to have timely medical examination to clarify the symptoms. Patients are advised to consult a doctor in a timely manner to clarify the cause of the disease and target treatment.