If the lung blisters are congenital and remain unchanged for many years, they are relatively safe and not scary. If they are acquired, they may affect lung function and are more serious. Single or small-sized lung herpes may have no obvious symptoms and are sometimes only detected incidentally on chest radiographs or CT examinations. If the lung herpes remain unchanged for many years, they can be left untreated and can be followed up on a regular basis. Large or numerous pulmonary blisters may cause symptoms such as chest tightness, cough, hemoptysis, chest pain, etc. For multiple pulmonary blisters, if not intervened in time, lung dysfunction may occur when encountering external stimuli or other unfavorable factors, causing respiratory distress. In particular, patients with huge pulmonary herpes whose volume exceeds 1/2 of the volume of one side of the thoracic cavity, or patients with chronic obstructive pulmonary disease often have obvious symptoms such as chest tightness and shortness of breath. Infection within the blisters can cause cough, cough sputum, chills, fever, and cyanosis in severe cases, requiring active treatment. It is recommended that patients with pulmonary pustules should go to the hospital in a timely manner to avoid delaying their condition.