Lung alveolus is lung blisters, most of lung blisters have no symptoms, clinically the symptoms of lung blisters are mainly because of lung blisters are too big or more in number leading to lung dysfunction and hypoxia, or lung blisters rupture to form pneumothorax or hemopneumothorax caused by shortness of breath, chest tightness, chest pain, panic, etc. The symptoms of lung blisters are mainly because of lung blisters are too big in size or less in number leading to lung dysfunction and hypoxia. 1. Most of the pulmonary blisters are simple pulmonary blisters, with small volume and small number, which have less effect on lung function and may not have any symptoms. A part of pulmonary herpes are multiple pulmonary herpes or giant pulmonary herpes, which are large in size and affect pulmonary ventilation, especially patients with COPD will have obvious symptoms such as chest tightness and shortness of breath. 2. Part of the lung blisters will rupture to form pneumothorax or hemopneumothorax: external gas enters into the chest cavity, compresses the lung tissue and stimulates the wall pleura or hemopneumothorax to cause hemorrhage which can cause shortness of breath, chest tightness, chest pain, panic and other symptoms. Patients with pulmonary herpes are recommended to go to the hospital for further counseling and diagnosis.