Lung cancer is one of the most common cancers in the world. At present, surgical resection is still the standard treatment for early stage lung cancer. Triportal thoracoscopic lung resection is a routine surgically procedure for early stage lung cancer while uniportal thoracoscopic lung resection is developing rapidly in recent years. Although uniportal VATS pulmonary resection has been proven to be effective in preventing postoperative morbidities, there is still no ample evidences to demonstrate that uniportal VATS pulmonary resection is equal or superior to traditional triportal thoracoscopic pulmonary resection. The purpose of this multicenter randomized controlled trial study is to compare the uniportal VATS with traditional triportal VATS pulmonary resection in postoperative complications, long-term survival, lymph node dissection and local recurrence.