The 6mm pure ground glass nodule one year ago, if it is caused by smoking and has not caused any lesion, no medication is needed; if it is caused by pneumonia or lung tumor, medication should be given as soon as possible. 1. Smoking: prolonged smoking may stimulate lung tissue and easily cause non-infectious inflammation. At present, this factor does not require special treatment, regular observation is sufficient, but smoking should be quit in time. 2. Pneumonia: for example, lung inflammation caused by infected bacteria, viruses and fungi, which may easily lead to inflammatory exudate from the lungs, and pure ground-glass nodular shadows can be found through examination. For bacterial infection, cephalosporin and penicillin can be taken orally; for viral infection, ribavirin can be taken orally; for fungal infection, fluconazole and itraconazole can be taken orally. 3. Lung tumors: for example, lung adenocarcinoma at the early stage, once diagnosed, tumor resection should be carried out immediately; if there is metastasis or proliferation after operation, chemical drugs, such as vincristine, oxaliplatin, etc., can be used under the guidance of doctors. Regarding the 6mm pure ground glass nodule, the specific treatment should be analyzed with the cause of the disease, and should be actively consulted to understand the nature of the nodule, and then targeted treatment.