The common causes of dizziness and buzzing in the ears are as follows: 1. It may be caused by insufficient blood supply to the brain, mostly in middle-aged and elderly people, but it can also occur in young people. In middle-aged and elderly patients, most have atherosclerosis, hyperlipidemia, diabetes and hypertension. 2. In young people, most are caused by mental tension and stress. Insufficient blood supply to the brain, including insufficient blood supply to the internal carotid artery and insufficient blood supply to the vertebral basilar artery system.3 When the blood supply to the vertebral basilar artery system is insufficient, the patient shows ischemia and hypoxia in the cerebellum and brainstem, and may experience dizziness, balance disorders and ataxia.4 When the blood supply to the internal carotid artery system is insufficient, the patient may have impaired blood supply to the ear, and the patient may experience buzzing in the ear, and in severe cases, may also experience deafness. Patients may also experience darkness in the eyes, sensory impairment in the limbs, or motor dysfunction. If a patient has hyperlipidemia, diabetes, hypertension, or cerebral atherosclerosis, he or she should be actively given regulation to try to bring the patient’s blood lipids, blood sugar, and blood pressure up to standard. Young people should mainly relax, reduce stress, develop good work and rest habits, and ensure sufficient sleep time may be symptom relief.