Tinnitus is the subjective sensation of sound in the ear or skull without a corresponding external sound source or electrical stimulus. Tinnitus is the result of different pathological changes of many diseases that involve the auditory system and has a complex etiology. Tinnitus is a symptom, not a disease, and is divided into objective tinnitus and subjective tinnitus. Objective tinnitus includes vascular and myogenic. The causes of vascular tinnitus are related to impaired sound transmission in the middle ear resulting in excessive self-hearing and altered intracranial and extracranial vascular patterns. The causes of subjective tinnitus are more complex and include noise, shock, drug toxicity, ischemia, trauma, and other factors that may lead to inner ear damage, as well as inflammatory tumors of the middle ear and inner ear central system. Systemic diseases that can cause tinnitus include: abnormal thyroid function, diabetes, cervical spondylosis, multiple sclerosis, iodine or zinc deficiency, anemia, migraine, hypertension, hyperlipidemia, kidney disease, autoimmune diseases, etc.; psychosomatic factors also contribute to tinnitus. Factors that affect or trigger tinnitus include noise, psychological factors such as family, marriage, occupation, accidental events and other mental stress can trigger tinnitus. Fatigue, menstrual period, diet food, mental illness, cheese food, chocolate, coffee, alcohol, tobacco, etc. can aggravate tinnitus. In summary, tinnitus can be caused by a variety of reasons. There are many factors that cause and affect tinnitus, and the cause needs to be clarified in a timely manner.