Chronic supurative otitis media is chronic inflammation of mucoperiosteum middle ear cleft. Hearing loss is ones of symtoms that cause patients came to Hospital. 30 outpatients (54 ears) with chronic supurative otitis media in ENT Department of Dr. Kariadi Hospital Semarang were studied during September - Nopember 1996. The hearing treshold was evaluated with audiometer and degree of hearing lo…