For patients with stage I lung cancer, the NCCN guidelines point out that if the patient has no contraindications for anatomy and surgery, as long as it does not violate the standard of tumor treatment and the principle of thoracic surgery, it is highly recommended of VATS or minimally invasive surgery. Although previous papers seem to have obvious advantages, there is a lack of clinical prospective data from patients with stage II-III lung cancer, and especially in the prevalence of uniportal VATS, there is still no objective analysis of this hypothesis. Therefore, the investigators plan to conduct a randomized, prospective study to compare perioperative complications, postoperative pain, life quality, lung function recovery, tumor-free survival rate, etc., in lobectomy for stage II-III lung cancer patients with VATS and thoracotomy.