Sudden vertigo can be seen in the following diseases: 1, hypertension: manifested as dizziness, hair, double vision, neck pain and other clinical symptoms; 2, cervical spondylosis: manifested as dizziness, vision rotation, numbness of the upper limbs, lower limbs, and cervical pain and other symptoms; 3, vertebral – basilar artery insufficiency: vertigo as the first symptom, most of which is manifested as vertigo, sudden blurring of vision, vision rotation, which can be accompanied by dizziness, heaviness; 4, cerebral infarction: infarction in the brainstem, cerebellar infarction, most of which are manifested as the first symptom of vertigo, and should be monitored closely and go to the hospital for consultation in a timely manner.