Objective To retrospectively investigate the clinical characteristics, surgical treatments of the patients with lung ground-glass opacities (GGO). Methods All the patients, who underwent surgical resection of GGO in our department from Jan. 2013 to Dec. 2016 were retrospectively reviewed. The clinicpathological features were analyzed. Results A total of 663 patients were included in this study. The rate of malignancy was 92.6% (614/663). The diameter of GGO in benign group 〔(0.8±0.2) cm〕 was significant smaller than that in malignant group 〔(1.5±0.8) cm〕(PP