Inadequate blood supply to the brain can lead to tinnitus. Insufficient blood supply to the brain is mainly due to hypertension, diabetes, hyperlipidemia, smoking, and obesity. These risk factors, combined with a poor lifestyle, can cause arteriosclerosis in the brain, which can lead to a gradual narrowing of the cerebral vascular lumen over time, slowing blood flow and resulting in symptoms of insufficient blood supply to the brain. Insufficient blood supply to the brain can lead to impaired circulation in the inner ear of a person, and therefore tinnitus may occur. For the treatment of this cerebral insufficiency, we can control vascular risk factors, adjust lifestyle, medication and hyperbaric oxygen therapy, as follows: first, control vascular risk factors; second, adjust lifestyle; third, medication can be taken such as Ginkgo biloba extract, brain heart capsule, and brain pulse Thai capsule to improve the intracranial blood supply and oxygenation; fourth, by doing Hyperbaric oxygen therapy is also effective for tinnitus.