Benign pulmonary nodules do not recur after surgery. Benign pulmonary nodules are mainly inflammatory nodules caused by infection with viruses, bacteria, Mycobacterium tuberculosis and other pathogens, and the inflammation is completely cured by standard anti-inflammatory treatment, which leaves nodular lesions with varying degrees of fibrosis and calcification in the lungs. Since the nodules are diffusely distributed, the lung tissue function can be reduced, and surgical excision to repair the mucosa of the lung can improve the lung function and prevent the recurrence of new nodules. In addition, idiopathic benign pulmonary nodules, mainly nodules with varying degrees of fibrosis and calcification of the lung tissue, are also seen.