Fahr's syndrome is a rare disorder. It is characterized by symmetric, extended calcification of the basal ganglia. Sometimes, the cerebellum is also involved. Non-specific symptom bothers the physicians, nevertheless computed tomography (CT) encourages us when diagnosis is obtained. Fahr's syndrome has been described owing to familial hereditary and hypofunction of the parathyroid. We experienced a patient who complained of dizziness. Romberg's test revealed unsteady gait and there was head tremor. Brain CT revealed symmetric calcification of the basal ganglia and cerebellum. After a series of studies and differential diagnosis, Fahr's syndrome was concluded. We have discussed the detail in our article.