Tinnitus is the subjective sensation of sound in the ear or skull without a corresponding external sound source or electrical stimulus. Tinnitus is a symptom, not a disease. Tinnitus is the result of different pathological changes of many diseases involving the auditory system, and the etiology is complex and classified in many ways. According to the etiology, it can be classified into objective tinnitus and subjective tinnitus. Objective tinnitus is mainly a body sound that appears in the skull and includes vascular tinnitus and myogenic tinnitus. Subjective tinnitus may be caused by cochlear or central organ or function disorders, including spontaneous tinnitus, noise tinnitus, drug tinnitus, toxemia tinnitus, systemic disease tinnitus (e.g. thyroid abnormalities, diabetes, anemia, migraine, hypertension, hyperlipidemia, kidney disease), etc. Factors that affect or trigger tinnitus include noise, psychological factors such as family, marriage, occupation, accident and other mental stress can trigger tinnitus. Fatigue, menstruation, diet food, mental illness, cheese food, chocolate, coffee, alcohol, tobacco, etc. can aggravate tinnitus. Occasional tinnitus patients do not need to be nervous and do not need treatment. Frequent tinnitus can be caused by certain diseases and can also have certain effects on patients, such as insomnia, hearing loss, dizziness, lack of concentration, emotional excitement, anxiety, depression and loneliness, etc. The cause needs to be clarified and treated actively in time.