This report provides a comprehensive overview of Chronic Obstructive Pulmonary Disease (COPD), a common and treatable disease affecting both men and women worldwide. The report begins with an introduction to COPD, differentiating it from similar conditions like emphysema and chronic bronchitis, and highlighting the shared symptoms with asthma. It then delves into the effects of COPD on human health, detailing how it damages the airways, leading to breathing difficulties and various symptoms such as tiredness and chronic cough. The consequences of COPD, including limitations in daily activities, financial strain, and potential co-morbidities like heart disease and depression, are also discussed. The report explores the causes of COPD, including exposure to tobacco, air pollution, and early life events, distinguishing between modifiable and non-modifiable risk factors. It emphasizes the importance of early diagnosis and treatment, detailing preventive measures such as smoking cessation, healthy lifestyle choices, and vaccinations. The report also outlines different types of inhaled medications and other treatments, including antibiotics and corticosteroids. Finally, it describes the primary, secondary, and tertiary prevention levels and the control measures taken to manage COPD, including the WHO's interventions and the role of organizations like the Global Alliance against COPD (GARD).