Cervical fusion means that the patient’s cervical vertebrae have fused. The normal cervical vertebrae of a person should have seven segments, all of which exist independently. However, the patient has a fusion of two vertebrae due to abnormal development, and the number of cervical vertebrae is reduced from 7 to 6. The fusion of the cervical spine can present with a number of clinical manifestations, such as neck pain, limited movement and shortening of the neck, which may appear to be slightly shorter in appearance, and may present with other areas of deformity. Some patients may also have a range of clinical manifestations, such as dizziness, nausea, vomiting, etc. Patients can be further diagnosed by x-ray or CT or MRI of the cervical spine. If the patient has a series of clinical manifestations that have affected work and life, surgery may be an option if necessary.