Subpleural nodule 2mm in diameter in the anterior and posterior part of the upper lobe of the right lung can be caused by bacterial infection, fungal infection and lung tumor, etc. Its etiology is different and the treatment method is not the same, and the etiology should be clarified to be treated by medication, surgery and other ways to deal with it. 1. Bacterial infection: Bacterial infection causes lung nodules, which need to choose cephalosporin drugs to fight infection, such as cefuroxime and so on. 2. Fungal infections: Fungal infections cause pulmonary nodules, you can choose fluconazole drugs for antifungal treatment (such as voriconazole, etc.), but you need to pay attention to review liver function, because antifungal drugs can cause liver function abnormalities. 3. Lung tumors: lung tumors can cause pulmonary nodules, which need to be treated by surgical resection of tumors and sent to pathology biopsy after surgery, and radiotherapy according to the pathological condition if necessary. Lung nodule patients, usually if there is discomfort, timely to the hospital, do not be careless, so as not to delay treatment.