In recent years, cervical ankylosis has been gaining attention due to its increasing incidence. More and more people are suffering from this disease, but also because of the lack of understanding of cervical ankylosis, most people are often overwhelmed at this time. The first step in treatment is to have an examination. The examination items of cervical ankylosis are: 1. Electrophysiological examination ① Visual evoked potential (VEP) is normal, which can be differentiated from optic neuromyelitis optica and MS. ②The lower limb somatosensory evoked potential (SEP) wave amplitude may be significantly reduced; the motor evoked potential (MEP) is abnormal, which can be used as an indicator to judge the efficacy and prognosis. The electromyogram shows loss of nerve changes. The CSF pressure is normal, the appearance is colorless and transparent, the cell count and protein content are normal or mildly increased, lymphocytes are predominant, and the sugar and chloride are normal. MRI typically shows thickening of the spinal cord and multiple lamellar or speckled lesions in the medulla of the lesioned segment, with T1 low signal and T2 high signal, with uneven intensity and possible fusion. In some cases, there may be no abnormality at all.