목적: Allergic rhinitis occurs at 10-40% in the world's population and it cause runny nose, sneezing, itching and qualitative degraded sleep disorder which are causing the failure of social life. Allergic rhinitis can be associated with patient of obstructive sleep apnea. The aim of this study was to investigate the impact of allergic rhinitis on obstructive sleep apnea and the change of the symptoms of obstructive sleep apnea after allergic rhinitis treatment. 방법:We examined polysomnography to 105 patients who diagnosed with obstructive sleep apnea in our sleep clinic. All the patient was diagnosed with allergic rhinitis underwent allergy skin testing. Patients were divided in two groups of OSA with AR and OSA without AR. We did the survey of Visual analogue scale, Epworth Sleepiness Scale, Chalder Fatigue Scale, Daily Hassles Scale, Conner-Davidson Resilience Scale, Rhinoconjunctivitis Quality of Life Questionnaire and compared two groups before Allergic rhinitis treatment. Also We measured before against after points of 17 completed patients who are in group of OSA-AR. 결과:Above the 105 patients, OSA-AR group was 27 and OSA group was 78. Age ranged from 17 to 66 years old. Before treatment, OSA-AR group was higher but not significantly higher than OSA group in average scores of VAS, ESS, CFS, DHS, CD-RISC, RQLQ examination and TNSS, which associated with rhinitis in RQLQ, was not also significant higher. The average VAS (sleep time, day time) in 17 patients who underwent treatment in OSA-AR group was significantly lower after treatment than before treatment (sleep P = 0.001, day P = 0.01). The average scores of ESS, CFS, DHS, CD-RISC, RQLQ, TNSS was lower but no significant difference after treatment than before treatment. 결론:We could find out Allergic rhinitis does not have a significant impact on symptoms between the two groups. However, We were able to confirm that Allergic rhinitis treatment contributes to improve symptoms of patients in OSA-AR group.