Severe vertigo and unstable standing are the main manifestations of cerebellar lesions. Due to insufficient blood supply to the brain, the patient can suddenly develop vertigo with symptoms of visual impairment, weakness of limbs and unsteadiness in standing, mostly occurring when there is a large amount of neck movement. The following is an elucidation of its etiology. Since vertigo can be caused by various pathological factors such as vestibular, visual, cardiovascular and cervical spine, clinical judgment in determining the relationship between cervical instability and vertigo should first exclude related departments such as otolaryngology, ophthalmology and neurology, and make judgment based on the correlation between vertigo and cervical spine lesions. Some scholars believe that the stimulation of sympathetic nerve by the unstable displaced segment and the stimulation or compression of vertebral artery are the main causes of vertigo. And the role of cervical proprioceptive dysfunction in the development of cervical vertigo has also received attention.