Chronic Obstructive Lung is a good candidate for Respiratory Medicine. Chronic Obstructive Pulmonary Disease (COPD), also known as chronic obstructive pulmonary disease (COPD), is usually associated with airway and/or alveolar abnormalities caused by significant exposure to harmful particles or gases, and is generally accompanied by persistent respiratory symptoms and airflow limitation. Due to the slow onset and prolonged course of COPD, there can be no conscious symptoms in the early stages. In the middle to late stages, shortness of breath is manifested, accompanied by cough, sputum, and chest tightness. The sputum is usually white mucus or frothy sputum, occasionally with blood. Shortness of breath or dyspnea occurs in the early stages during more strenuous activities and gradually worsens. There are strict criteria for its diagnosis with the help of pulmonary function tests. When the patient only has chronic bronchitis and/or emphysema without persistent airflow limitation, the diagnosis of COPD is not made. The diagnosis of COPD is more stringent, so consultation requires a respiratory outpatient visit. Once the diagnosis of COPD is confirmed, it must be treated actively to avoid affecting the quality of life and posing a serious threat to life and health.