The primary Sjögren's syndrome is a chronic inflamatory autoimmune disease of the exocrine glands with various glandular and extraglandular (systemic) manifestations. Changes in exocrine function of glands--including bronchial, should influence the frequency of pulmonary affecting, hence functional disorders as well. Examining some standard parameters of pulmonary function can often give valuable information about pulmonary alterations. The lack of tipical alterations in pulmonary function in patients with primary Sjögren's syndrome, found by us, gives good reason to express the supposition that pulmonary engagement with this disease is insignificant in the majority of cases. (Tab. 1, Ref. 7.).