Tinnitus is a common clinical symptom. There are many causes of tinnitus, and some patients are unable to identify a clear cause, which is called idiopathic tinnitus. Sometimes, however, tinnitus is a symptom of some more serious disease. External ear canal diseases such as blockage by cerumen, foreign bodies, tumors or inflammatory swelling can lead to tinnitus, the severity of which is related to the degree of blockage. Among middle ear disorders, a few patients with chronic otitis media may have tinnitus, but to a mild degree. Negative pressure in the tympanic chamber, adhesions or fixation of the auditory chain can cause tinnitus. In otosclerosis, tinnitus is more pronounced, starting as an intermittent low-pitched sound and gradually worsening and becoming persistent, which is very painful for these patients. Tinnitus caused by inner ear disease is mostly high pitched and intermittent or persistent. The degree of tinnitus is often related to the extent and degree of the lesion. In elderly people with degenerative changes in the sensory system, tinnitus is also often a precursor to the onset of deafness. Lesions of the circulatory system can also cause tinnitus, which is noisy when it comes from the veins. Tinnitus from the arteries often coincides with the pounding of the heartbeat. Tinnitus due to hypertension is usually bilateral. Tinnitus from carotid body aneurysms is unilateral. Arteriosclerosis and heart valve lesions can also cause pulsatile tinnitus. In addition, about half of the patients with nasopharyngeal cancer have tinnitus. The nasopharynx is connected to the middle ear cavity by the eustachian tube, which can regulate the air pressure in the middle ear cavity and maintain the balance of pressure inside and outside the eardrum. Nasopharyngeal cancer usually occurs near the opening of the eustachian tube in the nasopharynx, and the cancer presses on the opening of the eustachian tube, causing obstruction and tinnitus. Therefore, when tinnitus occurs, we should pay attention to it and find the cause in time in order to control the development of the disease and prevent the damage to human body. However, in the process of finding the cause, patients should never be overly worried, make wild guesses, or even suspect that they have a tumor. Pessimism and boredom will aggravate tinnitus symptoms, and the result of this vicious circle will only aggravate the condition of tinnitus patients, which is not conducive to the treatment of the disease.