Clinically, there are many diseases that can cause tinnitus in both ears, and some of them may be the early signs of the disease, even with tinnitus in both ears as the first symptom, which is commonly seen in the following cases: hypertension, hyperlipidemia, atherosclerosis, cerebral infarction, cerebral atrophy and other cardiovascular and cerebral vascular lesions; diabetes mellitus, hyperthyroidism, and other endocrine system lesions or complications. Anemia, malnutrition; Alzheimer’s syndrome, cognitive dysfunction; psychosomatic disorders, such as anxiety, depression, autonomic dysfunction and so on. Tinnitus in both ears can also reveal recent medical conditions, such as chronic alcoholism, excessive fatigue, insomnia, sleepless nights, exposure to noise, stress and adverse life events.