Frosted glass nodules are often found as faint frosted glass-like nodular lesions in the lungs on chest radiographs or CT chest examinations. If the patient does not have cough, sputum, fever, hemoptysis and other symptoms, the patient can be observed clinically and the chest CT can be reviewed after 3-6 months. if the nodule does not grow, the patient can continue to be observed. if the nodule is found to grow during the review, or the patient has cough, sputum, chest pain, hemoptysis and other symptoms, or the nodule is larger than 1 cm at the beginning, further examination should be performed at the hospital to clarify the diagnosis. Diagnosis, including enhanced CT, bronchoscopy, CT-guided aspiration and other tests.