The causes of instant vertigo in the brain of patients are as follows: 1. If the patient has instant vertigo during the change of head position, it is considered to be caused by otolithiasis, and it is suggested that the patient should visit the hospital for treatment of otolithiasis by manual repositioning, and the patient’s otolithiasis can be cured after 1-2 times of manual repositioning. 2. It is recommended that patients should take sufficient rest and sleep to avoid falling down and other problems. 3. Instant vertigo may also be caused by transient cerebral ischemic attack, if patients are middle-aged or elderly, it is recommended to consult a hospital to improve head CT and transcranial Doppler examination for clarification. Then the patient should be given drugs to activate blood circulation and improve blood supply to improve the symptoms, such as flunarizine hydrochloride capsule and blood clotting tablets.