Pulmonary alveoli, i.e., pulmonary blisters, are most afraid of recurrent inflammation of the lungs, strenuous exercise, and violent coughing, so attention should be paid to avoiding infections, avoiding strenuous exercise, and quitting smoking. When the pressure inside the alveolar cavity rises, causing the walls of the alveoli to rupture and fuse with each other, the gas-containing cystic cavities larger than 1cm in diameter formed after the fusion are called pulmonary blisters. Lung blisters are usually secondary to inflammatory diseases of the airways, such as pneumonia, emphysema or tuberculosis. Inflammation of the lungs is the cause of pulmonary blisters. If inflammation occurs repeatedly, pulmonary blisters can be aggravated, resulting in an increase in the number or size of pulmonary blisters, chest tightness, shortness of breath, and a small number of people will have hemoptysis and chest pain. It is recommended not to do too strenuous exercise and not to cough strenuously and continuously, so as to avoid the rupture of pulmonary herpes under high pressure and the emergence of pneumothorax. Surgery is needed if the rupture of the lung blisters causes pneumothorax or hemopneumothorax, if the lung blisters are too large and compress the lung tissues, or if the lung blisters are repeatedly infected. Seek medical attention if you feel unwell. If you are a smoker, please quit smoking as soon as possible.