Pulmonary emphysema indicates a decline in lung function when one moves. There are two conditions: one is that the cause of airway obstruction that causes emphysema is not resolved, and obstructive inflammation of the trachea causes airflow obstruction, and emphysema will continue to worsen, and this obstruction leads to a feeling of fullness and congestion in the lungs that is particularly uncomfortable. Therefore, the airflow is not very smooth at normal times, and how to adjust breathing during activities because people have to take in more oxygen while the trachea is still obstructed? Another is the formation of emphysema after the destruction of the alveoli, when the destruction of the alveoli, the blood vessels in the alveolar wall is broken, this situation because the blood vessels are broken can not absorb oxygen, so the emphysema area is larger, the scope of the larger will also cause hypoxia. Therefore, when there is a lack of oxygen, oxygen is needed for activities, and when the alveoli are destroyed by emphysema and cannot take in enough oxygen, of course, when you move, you will wheeze.