Bilateral pulmonary ground-glass nodules are due to lung lesions. Based on the density characteristics of focal lesions, pulmonary ground-glass nodules are classified as pure pulmonary ground-glass nodules and mixed ground-glass nodules. Pulmonary Mulliglass nodules can be caused by focal fibrosis of the lungs, focal lung injury and lung adenocarcinoma pre-infiltrative lesions associated with lung infections and lung cancer. Mixed glassy nodules are more malignant than pure glassy nodules, due to different pathologic changes within the lesion resulting in mixed density imaging, and the main common imaging types and associated diseases are mixed glassy-solid nodules, mixed glassy-vacuolar solid nodules, and solid-peripheral glassy nodules. If there is a double lung ground-glass nodule, you should consult a doctor to clarify the cause of the disease and treat it accordingly.