The lecture describes the morphofunctional organization of the sound-conducting and sound-receiving structures of the auditory analyzer. The most relevant types of pathology that lead to actual types of pathology of the hearing organ are described. Causes and mechanisms of development of two main types of hearing impairment conductive and sensorineural hearing loss are highlighted. Modern hardware complexes and operational technologies are shown, which are used for the diagnosis and treatment of conductive hearing disorders. Causes and mechanisms of sensorineural hearing loss are highlighted. Microelectronic devices (cochlear implants) and the technology of their transplantation into the affected hearing organ are described. The characteristics of hearing aids, which are most often recommended by experts to patients of various ages with hearing impairment, are given.