Nowadays, as people become more health-conscious and have regular medical checkups, more and more ground glass-like lesions of the lungs are being detected. GroundCglass opacity (GGO) is a ground glass shadow that appears as a cloudy increase in lung density on chest CT, with bronchial and pulmonary vascular structures still visible.GGO is not unique to lung cancer, but can also be seen in infections and interstitial lesions. In recent years, the incidence of early-stage lung cancer presenting as focal GGO has increased rapidly, especially in young, female and non-smoking populations, and is now an important area of surgical treatment for lung cancer. pGGO is classified as simple GGO (pGGO) and mixed GGO with a solid component (mGGO). , the alveolar wall is thickened but the alveolar cavity is not completely occluded; while the solid component in mGGO consists mainly of fibrotic or collapsed alveolar structures. In 2011, international colleagues jointly released a new classification of lung adenocarcinoma, which classifies lung adenocarcinoma into: i. Pre-infiltrative lesions, which are classified into atypical adenomatous hyperplasia (AAH) and adenocarcinoma in situ (AIS) II. Microinvasive adenocarcinoma (MIA). Third, infiltrative adenocarcinoma. infiltrative adenocarcinoma includes: volvulus-like growth predominant type (LPA), glandular alveolar type, papillary type, micropapillary type and solid type, etc. AIS and MIA have a better prognosis with a specific survival rate of 100% after complete resection. pGGO lesions mainly include AAH, AIS and MIA, and very few may present as infiltrative adenocarcinoma; while mGGO lesions mainly MIA, LPA and other invasive adenocarcinomas. The literature reports that the percentage of persistent GGO diagnosed as AAH, AIS, MIA, or invasive adenocarcinoma is approximately 80%. Predicting the type of lung adenocarcinoma in patients based on chest CT presentation can help to develop a reasonable treatment plan.