Chronic Obstructive Pulmonary Disease (COPD) is a preventable and treatable disease characterized by persistent restriction of expiratory airflow; it is generally progressive, associated with an abnormal chronic inflammatory response due to factors such as smoking, and its progression can be slowed by treatment. Chronic obstructive pulmonary disease (COPD) is an inflammatory disease of the small airways, associated with smoking, air pollution and other factors, which can lead to persistent narrowing of the airways, thus causing persistent restriction of expiratory airflow, which is reflected in the clinical manifestations by chest tightness, which usually worsens after activity. COPD generally progresses gradually, and as the disease progresses, complications such as chronic respiratory failure and chronic pulmonary heart disease may eventually develop. COPD may also be accompanied by other symptoms, such as cough and sputum due to chronic airway inflammation. COPD can be slowed down by standardized treatment, such as the need to quit smoking, prevention of respiratory infections, and inhalation of tiotropium bromide and other medications; therefore, the disease requires timely respiratory medicine consultation and standardized drug treatment.