A subpleural nodule is a type of lung nodule that is located under the pleura, which may also be accompanied by thickening of the adjacent pleura. They may be metastatic or primary malignant nodules, or they may be benign nodules due to inflammation, fungal infection, or tuberculosis. Subpleural nodules have less impact on lung function, and most of them have no obvious clinical symptoms and are only found during physical examination. Some of them have symptoms such as fever, cough, sputum and blood in sputum, hemoptysis and chest pain. After discovery, go to the hospital in time to improve the relevant examinations, such as lung cancer five, sputum cytology, tuberculin test, blood routine, nodule puncture biopsy, lung CT and so on, in order to clarify the nature of the class of nodules. Specific cases should also go to the hospital for relevant examinations, according to the cause of the disease and then do the treatment.