The severity of lung cysts is related to the size of the cysts and physical fitness. Smaller cysts are usually not serious, while larger cysts need to be taken seriously. Lung cysts usually refer to cystic lesions containing gas or fluid in the lungs, and are mostly benign. For smaller cysts, patients often do not have obvious clinical symptoms, so they can be treated without special treatment, and can be reviewed regularly. For larger cysts, they may compress the lung tissue and cause respiratory difficulties, and when the patient’s physical condition is poor, the cysts are prone to infections, which may be manifested as high fever, cough, chest pain and other clinical symptoms, which is dangerous and requires timely treatment. The presence of pulmonary cysts, it is recommended that patients seek medical treatment in a timely manner, under the guidance of the doctor to receive standardized treatment, to avoid delaying the condition.