This study was designed to evaluate the effects of traditional korean herbal medicine(Jaumkunbi-tang) therapy on a hyperthyroidism patient. Clinical data was analyzed on a patient with hyperthyroidism whose main symptoms were fatigue, palpitation, up flame, hyperhidrosis, hypersomnia and dyspepsia. The patient visited our hospital 9 times from November 10, 2011 and remianed until January 30, 2012. He was treated with Jaumkunbi-tang, the traditional korean herbal medicine. After treatment, improvement was seen in clinical symptoms(such as fatigue, palpitation, up flame, hyperhidrosis, hypersomnia and dyspepsia) and thyroid function test. The study suggests that Jaumkunbi-tang, one of traditional korean herbal medicines, could be effective on the treatment of hyperthyroidism.