Sudden vertigo: 1. Take quiet rest, lie down in bed and do not get up to avoid fainting because of walking after getting up. 2. Drink warm boiled water or sugar water after sudden vertigo and consider whether it is caused by symptoms such as hypoglycemia. 3. Do not be anxious and do not worry. If the vertigo is particularly severe, have your family send you to the hospital in time for timely treatment, such as checking head CT, cervical vascular and cardiac ultrasound, etc. 4. Have a comprehensive examination, such as ear examination, to worry about otitis media, labyrinthitis or Meniere’s syndrome.