Miller Fisher syndrome is characterized by acute external ophthalmoplegia, ataxia and areflexia in the abscence of significant motor or sensory deficit in the limbs and usually results in a complete recovery. Most cases have anteceding events like upper respiratory infection or other viral infections. Its accurate anatomic lesion sites and pathogenesis is still unknown. Recently we experienced a 47 year-old man who had a sudden onset of complete total ophthalmoplegia, ataxia, diplopia and whose condition was improved through Oriental medical treatment.