Sense of occlusion in the ear means that the ear is like being blocked by a lump of cotton and hearing loss. Tinnitus, hearing loss and sense of occlusion in the ear are common symptoms of nasopharyngeal cancer. When nasopharyngeal cancer occurs in the lateral wall of nasopharynx, lateral fossa or upper lip of the opening of Eustachian tube, unilateral tinnitus or hearing loss can occur when the tumor compresses the Eustachian tube, and also Catarrhal otitis media can occur. Daily prevention: 1, usually wash your face, hair, bath do not make sewage into the external ear canal. 2, septic otitis media patients can not swim, otherwise not only the pus in the ear will contaminate the water of the swimming pool, hindering public health, and sewage into the ear will also aggravate the condition. Even if the ear has not pus, also need to be examined by a doctor to prove that the tympanic membrane has indeed been completely repaired, before swimming, otherwise into the water is very easy to relapse. 3, usually to strengthen physical exercise, improve the body’s resistance. Avoid colds and flu, don’t be overly fatigued. Excessive smoking and drinking is also one of the reasons for recurrence.