The book is dedicated to one of the most pressing problems of pulmonary pathology and reflects modern scientific views. The monograph provides a deep historical analysis of how the concept of chronic obstructive pulmonary disease (COPD) arose and why onane found support in domestic medicine, how at first the views of different schools on the same problem differed and gradually converged. The publication discusses the definition and concepts of COPD, diagnostics and differential diagnostics based on modern methods; clinic, treatment and prognosis of the disease. For therapists, pulmonologists, anesthesiologists-resuscitators, general practitioners.