Hyperbaric oxygen therapy for tinnitus, 10 days for a course of treatment. The specific operation of hyperbaric oxygen therapy is as follows: using multi-person hyperbaric oxygen chamber, the pressure is 0.25mpa, pressurized for 20 minutes, stabilized pressure after inhaling pure oxygen, rest for a period of time after 30 minutes, and then inhale oxygen again after a 10-minute interval with a frequency of 1 time/day, and continue to be treated for 10 days as a course of treatment. Hyperbaric oxygen therapy is mainly used to increase the partial pressure of oxygen in the blood by absorbing pure oxygen, improve the circulation of lymphatic fluid in and out of the ear, so as to alleviate the hypoxic state of the auditory nerve and promote nerve repair. In clinical practice, hyperbaric oxygen therapy is only an adjunctive treatment for tinnitus, and comprehensive treatment, such as medication, masking therapy, acoustic therapy, and tinnitus habituation therapy, etc., is needed to reduce or eliminate tinnitus symptoms.