High blood sugar can cause tinnitus. Long-term poor control of blood glucose patients, may cause complications of diabetes, such as diabetic peripheral neuropathy, diabetic microangiopathy, which affects the auditory nerve, so that the auditory nerve damage caused by tinnitus, and secondly, it will also affect the blood flow in the ear, so that the blood supply to the ear is reduced and tinnitus occurs. If the tinnitus is caused by high blood sugar, you need to go to the endocrinology department in time, and at the same time, you need to monitor your blood sugar and take medication to treat it, and the tinnitus symptoms may be relieved after your blood sugar is controlled and stabilized. In addition, you also need to go to the ear, nose and throat department in time to improve the relevant examination to exclude other lesions caused by tinnitus. Tinnitus patients need timely medical examination and treatment.