Focuses of ground-glass nodules are mostly less serious if they are pneumonia, charcoal deposition, etc., and more serious if they are malignant tumors such as bronchopulmonary carcinoma. Milled glass nodules are lung nodules with a milled glass component, i.e., a cloudy, slightly dense image on chest CT. Ground-glass nodules include pure ground-glass nodules and mixed nodules with both solid and ground-glass components. Pure ground-glass nodules have a malignancy rate of about 18%, while mixed nodules have a higher malignancy risk of about 63%. If the ground glass nodules are pneumonia, prompt treatment with ceftriaxone and other therapies can cure them, and only a few of them are more severe, while the overall condition is not serious. If the nodules are carbon deposits or focal fibrous foci, they can be treated with drugs such as amlodipine to relieve the symptoms and are not serious. If the nodules are malignant tumors such as bronchopulmonary carcinoma, they are more serious and may lead to infiltration and metastasis of the cancerous foci if not treated in time, which may even be life-threatening. It is recommended that the patient should consult the doctor in time, according to the size of the nodule, tumor markers and other test results to determine the possible causes of the disease, and follow the doctor’s instructions for further examination and treatment, and the medication should be taken under the guidance of the doctor.