Lung segmental resection and lung wedge resection are not better than each other, and it is necessary to combine the conditions of the lungs to determine which one is suitable for use. Small lesions adjacent to the pleura can be completely resected by wedge resection, with less damage and better results; deep lung lesions, which are relatively large in size, need to be resected by lung segmental resection and lymph node dissection, with better results. 1. Smaller lesions in the lung adjacent to the pleura are the advantageous sites for pulmonary wedge resection, which can be clinically cured through localized wedge resection followed by anastomosis, and with less injury, which is the preferred option. 2. Deep lesions in the lungs, which are relatively large in size and cannot be cured by wedge resection alone, need to be separated from the arteries, veins, and bronchi to carry out segmental resection, and need to be cleared of lymph nodes to reduce the probability of recurrence and metastasis, which is a better treatment plan. The discovery of intrapulmonary lesions in a timely manner, need to be combined with the clinical examination of comprehensive judgment, diagnosis of the disease, under the guidance of the clinician for standardized treatment.