Milled glass nodules in the lobes of the lungs are cloudy, dense shadows in the lobes of the lungs with blood vessels and airways visible on imaging. Muffled glass nodules in the lobes of the lungs are usually due to lung inflammation, lung tumors, or tuberculosis, etc. Most of these nodules are benign, while some are malignant. When ground-glass nodules appear in the lobes of the lungs, it is necessary to evaluate the benign or malignant nature of the nodules according to the size and shape of the nodules, the patient’s symptoms and auxiliary examinations. Benign lesions: if the nodule is small, less than 8mm, and there is no uncomfortable symptom, it can be followed up regularly according to the doctor’s instruction; if there is fever, cough, sputum and other symptoms, it may be pneumonia, and the nodule will be reduced or disappeared after the application of antibiotics; if there are symptoms such as low-grade fever, night sweats, weakness, etc., it is considered to be tuberculosis, and the application of anti-tuberculosis drugs to treat it. Malignant disease: If the imaging of the nodule can be seen as burr sign, lobulated and other malignant nodule shadows, it is recommended to carry out puncture biopsy of the lung nodule and sputum cytology examination, etc., in order to clarify the nature of the lesion, and timely surgical treatment if necessary, and the postoperative combined application of radiotherapy and immunotherapy. When there are ground-glass nodules in the lungs, it is necessary to carry out timely examination and treatment, and to clarify the cause of the disease and then treat the cause of the disease.