Summary: The GOLD Report 2020 presents new additional data on the pathogenesis of COPD. In addition, recently published data pointing to the synergistic importance of risk factors such as childhood infections and housing overcrowding are taken into account. In the field of functional tests, it is recommended to use GLI standards for spirometry. To assess the severity of symptoms, it is recommended to use both CAT, CCQ (COPD Control Questionnaire) and SGRQ. An important indication for inhaled GKS therapy is exacerbations requiring hospitalization and ≥ 2 moderate exacerbations over the past year in the presence of an elevated peripheral blood eosinophil count. The strategy for managing COPD has also been modified to include comorbid disease monitoring, vaccination, and other differential diagnosis and education activities. The tables regarding differential diagnosis of COPD exacerbations have also been modified. The patient requires holistic doctor care.