Abstract:〔Abstract〕 Objective To explore the value of single and three-hole thoracoscopic approach in the treatment of patients with early non-small cell lung cancer. Methods A total of 76 patients with early non-small cell lung cancer admitted to the First Affiliated Hospital of Henan University of Science and Technology from September 2021 to September 2022 were selected as the study objects, and were divided into a control group and an observation group by random number table method, with 38 cases in each group. The control group underwent three-hole thoracoscopic approach, while the observation group underwent single-hole thoracoscopic approach. The clinical indexes, immune function, lung function and complications of the two groups were compared. Results All clinical indexes in the observation group were lower than those of the control group, and the differences were statistically significant (P < 0.05). one day after surgery, the levels of CD3+ , CD4+ , CD4+ /CD8+ in the observation group were higher than those in the control group, while CD8+ was lower than than in the control group, the differences were statistically significant (P < 0.05). Two months after surgery, the lung function indexes of the observation group were higher than those of the control group, the differences were statistically significant (P < 0.05). The complication rate of the observation group was lower than that of the control group, and the difference was statistically significant (P < 0.05). Conclusion The application of single-hole thoracoscopic approach has more obvious advantages in improving the therapeutic effect of patients with early non-small cell lung cancer, which can reduce the immune damage suffered by patients, improve their lung function and reduce the incidence of complications.