Whether surgery is recommended for lung nodules in 75 year olds needs to be determined by the nature of the nodules, and surgery is required when the nodules are malignant in nature. Lung nodules can be caused by factors such as lung inflammation, infection or tumor, etc. Generally, CT scan + enhancement examination of the lungs can assess the benign or malignant nature of the lung nodules through puncture biopsy to clarify the nature of the nodules, which in turn guides the treatment plan. For 75-year-old people with lung nodules, if the examination results of the lung nodules are benign, or the results of the examination determine that the nodules are benign, there is no need for surgical resection. For 75-year-old people with lung nodule examination results suggesting that the nodule is irregular, the presence of burr signs, etc., then the malignancy may be greater, and therefore require surgical resection treatment, postoperative lymph node clearance according to the results of the freezing, and postoperative chemotherapy and other treatments may also be required. It is recommended to consult a doctor in time for the discovery of lung nodules, and the doctor should take into account the physical condition of the 75-year-old and the nature of the nodules to formulate a suitable treatment plan, and follow the doctor’s instructions for treatment.