The management of ground-glass density nodules in the lungs is mainly based on the imaging features to determine the risk of lung cancer, after which the decision of follow-up or surgery will be made. 1. If the nodule is pure ground glass: previous CT data should be traced back. If the nodule is enlarged or has a realistic internal component, it is suspected to have the possibility of invasive carcinoma, and biopsy or surgery should be performed to determine the nature of the nodule, which will provide the basis for follow-up treatment; 2. If there is no previous CT data, triage should be performed according to the size of the nodule. If the size of the nodule is less than 6 mm, the follow-up of chest thin-layer CT can be done in 6~12 months, and the choice of treatment plan should be decided according to the changes during the follow-up process. 3. If the size of the nodule is larger than 6 mm, the follow-up of chest thin layer CT should be done every 6~12 months for 5 years, and the treatment plan should be decided at any time according to the follow-up results. 4. Mixed ground-glass nodules (partially solid nodules): previous CT data should be traced back, and biopsy or surgery should be considered if the nodule increases in size or solid component; if there is no previous CT data, close follow-up by thin-layer CT can be performed for the time being. In summary, the management of ground-glass density nodules in the lungs mainly depends on the judgment of the nature of the nodules.