The white stuff covering the surface of eardrum is usually considered to be related to otitis externa, calcification of eardrum and other factors, which need to go to the hospital for further examination to clarify the etiology. 1. Otitis externa: usually under the stimulation of inflammatory mediators in the external auditory canal, the epidermis of the external auditory canal and tympanic membrane becomes overgrown and keratinized, thus causing the phenomenon of white stuff covering the surface of the eardrum. In particular, fungal otitis externa usually presents symptoms such as ear itching, ear stuffiness and pain. 2. Calcification of tympanic membrane: It may be caused by repeated attacks of otitis media, which stimulates the tympanic membrane, and white plaques appear around the tympanic membrane, causing the phenomenon of white stuff covering the surface of the tympanic membrane. It is recommended to visit the hospital for examination and treatment by a specialized doctor if there is something white covering the surface of the eardrum.