Swelling sensation in the ear is an early symptom of middle ear cancer, and in the advanced stage, there is obvious pain. Middle ear cancer is malignant cancer occurring in middle ear, which accounts for 1.5% of ear tumors and 0.06% of systemic tumors. The etiology of swelling in the ear: i. Viral infection patients mostly have the history of upper respiratory tract infection within one month before the onset of disease, and the incidence of sudden deafness in upper respiratory tract infection is reported to be 8%~30%. Through serology and virus isolation method has been confirmed, can cause sudden deafness of the virus mumps virus, measles virus, influenza and parainfluenza virus, adenovirus type III, etc., can cause viral endolymphatic labyrinthitis, herpes zoster virus can cause viral neuronitis and ganglionitis. Viruses enter the inner ear through the following infection pathways: ① Through the blood circulation into the inner ear. ② Entering the inner ear through the cochlear aqueduct from the subarachnoid space. ③ Enter the inner ear by diffusion through the middle ear mucosa. After infection, the virus proliferates, adheres to the red blood cells, slowing down the blood flow and high coagulation, and because the virus can make the endothelium edema, it is easy to occur vascular embolism, resulting in blood flow obstruction in the inner ear and cell necrosis. Second, the inner ear vasculopathy in diabetes mellitus, hypertension, atherosclerosis and cardiovascular disease, the inner ear vascular matrix is more prone to spasm and thrombosis. This can explain why the patient mostly due to fatigue, anxiety and other factors and triggered. In recent years, some patients with sudden deafness have been observed for lipids, cholesterol and hemograms, but no important factors related to the onset of the disease have been found.Wright (1975) reported a case of sudden deafness after cardiopulmonary bypass surgery, and Zhong Nai-chuan (1980) reported two cases of erythrocytosis-induced sudden deafness on the northwestern plateau, which is an example of sudden deafness due to the vascular thrombus of the inner ear. Sneezing, nose blowing, vomiting, sexual intercourse and diving can cause a sudden rise in venous pressure and cerebrospinal fluid pressure, which can cause rupture of the cochlea window and vestibular window membrane, as well as rupture of the vestibular membrane, overlaying membrane and the endolymphatic capsule, which is more likely to occur in people with potential congenital malformations of the inner ear, and this can cause ionic disorders of lymphatic fluids and cellular toxicity. Sudden deafness occurs.