Hereditary hemorrhagic telangiecatasia(HHT) is a familial syndrome inherited by an autosomal dominant mode and characterized by recurrent epistaxis with multiple telangiectatic lesions on the mucosa and skin. Recently we experienced a 59-year-old male patient who had been suffering from recurrent epistaxos and needed blood transfusions frequently to correct anemia. The patient had strong farnilial history of epistaxis and showed telangiectatic lesion on the tongue. We diagnosed this case hereditary hemorrhagic telangiectasia.