Lung cysts can be categorized as congenital and acquired. Generally, when the cysts are small, there are no obvious symptoms; when the cysts are large, they can produce respiratory symptoms such as abnormal breathing, local compression symptoms such as dysphagia, and systemic symptoms such as fever. 1. Smaller size: if the cyst is small, usually no specific symptoms, mainly through physical examination, usually do not need special treatment, regular review can be, do not need to be too nervous. 2. Larger size: If the cyst is large, it may compress the bronchial tubes, leading to abnormal breathing, wheezing, dyspnea, dry cough and other symptoms. If the cyst compresses the esophagus, dysphagia may occur. If there is a combination of infection, symptoms such as fever, cough, sputum and hemoptysis may occur. The symptoms of patients with lung cysts vary greatly. Patients are advised to undergo regular medical checkups to detect physical abnormalities in time and take targeted treatment measures when necessary.