Ground glass nodules may be caused by bacteria, virus, tuberculosis, tumors, etc. Its pathological basis is mainly due to pathogenic microorganisms and tumor stimulation caused by inflammatory reactions in the lungs, destruction of lung tissues, infiltration, hyperplasia, and mechanization, which is manifested as a pale and thin density-enhanced shadow on CT examination. Ground-glass nodules can be benign or malignant. When the nodules are small, stable for a long period of time, and the patient is asymptomatic, no special treatment is needed, but regular observation and follow-up are required. The larger the nodule, the faster it grows, and the more it infiltrates the surrounding tissues, the higher the degree of malignancy. Patients with this kind of ground-glass nodules need to undergo further examination in time, such as fiberoptic bronchoscopy, fine needle aspiration biopsy, etc., in order to clarify the nature of the nodule and to treat it as early as possible. Therefore, patients who have been detected with ground-glass nodules in the lungs should go to the hospital in a timely manner and choose the appropriate treatment plan under the guidance of the doctor.