If the subpleural MGN is less than 8mm, follow-up observation is usually enough; if it is greater than or equal to 8mm, wedge resection or lobectomy is usually recommended through thoracoscopic surgery. 1. Subpleural MGN less than 8mm: the growth rate of this kind of nodule is slightly different from that of other tumors, and it is common that the size of this kind of nodule remains unchanged for 2-3 years in clinic, therefore, the follow-up time can be maintained at least for about 3-5 years. 2. Subpleural ground-glass nodule greater than or equal to 8mm: for this size of ground-glass nodule, wedge resection can be performed through thoracoscopic surgery to remove part of the surrounding lung tissue around the lesion. If the nodule is found to be malignant, lobectomy is usually recommended, i.e., resection of the lung lobe where the lesion is located and clearance of the intrathoracic lymph nodes. When subpleural ground-glass nodules are found, patients are advised to go to regular hospitals and listen to the advice of specialized doctors.