1cm ground glass nodules are firstly recommended to standardize scientific antibacterial treatment, if the ground glass nodules become smaller or disappear, it means it is inflammation. If the nodule does not change or grows to a different shape, with more obvious malignant features, early surgery is still recommended. Of course, the indications for surgery are changing with the understanding of the disease, previously it was recommended to operate if it was >8mm, now it can be recommended to 1cm, but it needs to be analyzed according to the specific condition. But we should closely observe the changes, for example, 1cm nodules, in 3 months, 6 months follow-up grow very fast, and in the middle out of the reality of the change suggests the possibility of malignancy, then the earlier surgery the better, because early surgery can prevent its spread in the lymph or other parts of the dissemination can be eradicated.