There are many causes of pulmonary ground glass nodules, which are commonly seen clinically in lung infections, tuberculosis and lung cancer. Depending on the disease, different treatments should be taken, and only with a clear diagnosis can more appropriate treatment measures be chosen. Different treatments are used for glassy nodules in the lung caused by different etiologies. For the most common nodules caused by lung inflammation, blood culture should be performed, sputum culture should be performed if sputum is present, and according to the causative organism, appropriate antibiotics should be selected and anti-infective treatment should be performed, which is usually reviewed for two weeks. If tuberculosis is considered, it is important to visit an infectious disease hospital and choose the appropriate treatment according to the recommendations of the infectious disease hospital doctor, and to be reviewed regularly. For patients who are considered to be lung cancer, they need to improve the examination and actively search for pathology. Bronchoscopy and lung puncture can be considered because pathology is the gold standard for tumor diagnosis and reduces the possibility of misdiagnosis. Therefore, once glassy nodules are found in the lungs during daily physical examination, do not be too anxious, listen to the doctor’s advice and actively improve the examination to clarify the diagnosis before treatment.