The problem of fibrosing interstitial lung diseases (ILDs) unites specialists from different areas: pulmonologists, radiologists, therapists, rheumatologists, occupational doctors and others. Actual achievements in studying fibrosing ILDs which are connected with development of immunology and molecular biological methods for the determination of biomarkers, new principles of image-diagnostics of lung pathology, search of new therapeutic “targets”, dictate the necessity of integration of knowledge by specialists from different areas of medicine for improvement pharmacotherapy algorithms. These algorithms directed to decrease fibrosis progression in ILDs, improve quality and increase lifespan of the patients.