Tinnitus is caused by tinnitus causes inner and outer hair cells in the cochlea membrane permeability barrier, or change in hair cell synaptic metabolic disorders, or auditory nerve fibers caused by a short circuit between have 60% of tinnitus sufferers clinicians can find the cause, summarized as the following reasons: 1, ototoxic drugs cause: drug induced tinnitus is divided into two categories, a class of drugs only cause tinnitus without causing hearing loss, because in the  Hone Tube   analysis these drugs affect the nervous system neurotransmitter associated with biogenic amine metabolism, causing auditory central neurons "convulsions" side effects caused by such as: Some anti-cancer drugs, anti-spasm Jue drugs, antibiotics, macrolide antibiotics, narcotic analgesics, etc. Another drugs both cause tinnitus and hearing loss caused by, or even result in total deafness, tinnitus caused by these drugs are hair cells or auditory neurons damaged the "primary" forms such as: anti-cancer drugs, antibiotics and antiparasitic properties, aminoglycoside antibiotics, etc. 2, the noise reasons: People have such a common experience, if you suddenly heard the sound of firecrackers, there will be a burst ear long reverberations half a day to subside, which is outside noise temporarily damage the human auditory nerve. those long-term work in highly noisy environment, such as tractors and car drivers, traffic police, armed police, military, discos staff, mahjong Entertainer, long meetings, as well as various types of equipment operators, etc., Noise is a victim of long-term noise caused most of the time to stimulate the inner ear nerve damage. noise induced tinnitus mainly for spontaneous activity of the auditory nerve fibers of the disorder. Generally exceed safe noise standards (85-90 dB) intensity noise is may cause tinnitus and deafness, but the noise of the same intensity, there are individual differences in sensitivity, only sensitive to harm or hurt only the extent of the heaviest. 3, the outer ear and middle ear disease causes: the outer ear foreign body (cerumen ) and so reach the eardrum can cause tinnitus; vascular malformations and diseases of the middle ear can also cause tinnitus by clinicians ear examination and treatment, the majority of these tinnitus can be cured. 4, age reasons: people aged over 60 the incidence of tinnitus up to 30%, primarily due to the growth of age, auditory nervous system degeneration due. 5, vascular malformation or rheology reasons: due to such reasons or blood vessels, so that the flow of the brain, the blood supply to the cochlea irregular blood flow, or from the neck, cranial vascular anomalies arising from vascular murmur spread to the ear cause tinnitus. 6, Meniere's disease causes; 7, acoustic neuroma; (mainly by surgery) 8 sclerosis : dense bone lamellar bone labyrinth focal be enriched cells and vascular substitute sponge produced new bone diseases (mainly by surgical treatment) 9, head trauma causes; 10 causes muscle clonus ; 10 a, nervousness reasons; 102, systemic disorders reasons: such as anemia, hypertension, diabetes, hypothyroidism, hypoglycemia, autoimmune diseases, etc. vasospastic disease may be accompanied by tinnitus. 103, while still cause of tinnitus is not clear, accounting for 40% of the number of tinnitus you have not personally seen this, bad judgment, it is recommended that the local hospital, the treatment to see it.