Blocked ears by earwax will not cause deafness in principle. However, if the earwax is more abundant and hard, accompanied by the recent water in the ear, soaking it, this will easily cause the outer ear canal to be blocked, and the sound can not be transmitted to the middle ear and inner ear, and the ear caused by the temporary hearing loss. But after cleaning the earwax, the hearing will be restored immediately. This is a common cause of clinical deafness, but repeated inflammation of the external auditory canal, or even irritation caused by the formation of cholesteatoma of the external auditory canal, may lead to perforation of the tympanic membrane, triggering conductive deafness, and surgery should be considered in order to restore hearing.