Ground glass 3mm nodules with unclear borders should first determine the nature of benign and evil, and then targeted treatment. Common treatment methods are drug treatment and surgery. 1. Drug therapy: Ground glass nodules such as lung infections (viral, bacterial, fungal, etc.) caused by the consideration of benign nodules, can be followed up to observe or anti-infective treatment, commonly used clinical drugs are cephalosporin, penicillin anti-inflammatory drugs. If it is pulmonary hemorrhagic disease, such as pulmonary vasculitis, prednisone, cyclophosphamide, compound sulfamethoxazole tablets and other drugs can be used. 2. Surgical treatment: after perfect laboratory examination and pathological biopsy, if the ground-glass nodule is clearly a lung tumor, surgical treatment can be adopted, such as radiofrequency ablation surgery, with postoperative radiation therapy or chemotherapy. If there are nodules with unclear boundaries of ground-glass shape, it is recommended to consult the doctor in time to clarify the condition with the help of the doctor and carry out targeted treatment or therapy. The above drugs have adverse reactions, it is recommended to use drugs under the guidance of a doctor, not blindly self-medication.