Frosted glass nodules are mainly manifested as cloudy thin shadows with mildly increased density, which are commonly found in benign lung lesions and malignant tumors, etc. They have no great relationship with the location, but with the size and nature of the nodules, etc. Once found, it is necessary to make a clear diagnosis and take corresponding treatments. 1. Benign lung lesions: such as pneumonia, tuberculosis, etc., can lead to the emergence of ground-glass nodules in the lungs. Among them, pneumonia can cause pleurisy, lung abscess, bacteremia and other complications if not treated in time, while tuberculosis can cause secondary lung infections, pneumothorax, bronchiectasis, respiratory failure and other complications. These can affect the health or even endanger life, should maintain a cautious attitude, regular review, any long-term unrelieved symptoms need us to actively treat. 2. Malignant tumors: Ground glass nodules are malignant, such as lung adenocarcinoma, carcinoma in situ, etc. No matter which part of the lungs they grow in, they may bring danger to the patient’s life, and they should be operated in early stage in time and treated with radiotherapy and chemotherapy. Regardless of the location of the nodule, if the size of the nodule does not change and there are no accompanying symptoms, the patient needs to undergo regular checkups. If the nodule becomes bigger or symptoms such as chest tightness or dyspnea appear, the patient should go to the doctor actively and follow the instructions for treatment.