This paper primarily discusses the effects of ultraviolet blood irradiation(UBI) on sudden deafness and comparison is made between the group of UBI and control. The results showed that the effctive rates of UBI on hearing and tinnitus were 75.86% and 82.60% respectively. Whereas the effective rates in control group were 55.55% and 54.54%. Therefore UBI is effective in the treatment of sudden deafness, especially for tinnitus.