Relapsing polychondritis is a very rare disease of the connective tissue in children. Inflammation may affect all cartilaginous structures. The study presents the case of a 10 years old boy with bilateral conchitis as a prominent symptom of the disease. In our patient lower airways were seriously affected. The detection of the degree of the disease in respiratory tract was facilitated to a large degree by pulmonary function tests and high resolution computed tomography. Histopathological picture of the inflamed cartilage of the tracheobronchial tree finally confirmed the diagnosis.