This article presents the results of a pharyngoscopic study of patients with chronic tonsillitis. Despite the accumulated experience, the problem of tonsillar pathology remains unresolved. The prevalence of chronic tonsillitis (CT) not only remains high, but also does not show a downward trend: compared with the 50s of the 20th century, the prevalence increased from 2.8-4.1% to 10-15% among population. According to some reports, the prevalence can reach 37-63%. Despite the constant improvement of methods for the diagnosis and treatment of chronic tonsillitis, this pathology continues to occupy a leading place in the structure of diseases of the pharynx. According to the Department of Monitoring, Analysis and Strategic Health Development of the Ministry of Health of Russia, the prevalence of chronic diseases of the tonsils and adenoids is 1,154.4 per 100,000 population.