Most of the grinding glass density shadows in the lower lobe of the right lung are benign lesions that are less serious, but some of the grinding glass shadows have the potential for malignant changes and require prompt treatment. Milled glass density shadow in the lower lobe of the right lung indicates the presence of milled glass nodules, which may be caused by interstitial inflammation, edema, fibrous tissue proliferation, tumor and other reasons. If the ground-glass shadow is less than 8mm, the patient has no special symptoms, and the nodule does not change much during the follow-up period, it is mostly caused by inflammation and fibrous proliferation, which belongs to the benign range, and is generally not serious. However, if the diameter of the ground glass density shadow in the lower lobe of the right lung is larger than 8mm, and it gradually increases during the follow-up period, and the solid component is increasing, or the nodule appears burr, lobulation, vascular signs, and the patient gradually develops cough, sputum, hemoptysis, then we need to highly suspect malignant nodules, and need to consult the doctor in time, and improve the relevant examinations, such as lung enhancement CT, and puncture pathological biopsy. If the patient has a grinding glass density shadow in the lower lobe of the right lung, it is recommended to go to the hospital in time for examination, follow the doctor’s instructions to improve the relevant examinations, identify the cause of the disease, and then standardize the treatment under the guidance of the doctor.