Some of the lung nodules caused by inflammation will disappear after the inflammation subsides. Lung nodules are divided into two major parts, one with calcification that will not disappear, and the other with the irritation of the lungs as the inflammation subsides and the nodules disappear. Most pulmonary nodules are benign, do not deteriorate, and pose little risk to the body and do not require special treatment. If a lung nodule is found to be malignant through CT examination, which is characterized by peripheral grossness and rapid enlargement, a puncture biopsy should be performed in a timely manner to clarify the nature of the nodule and select a reasonable method for surgical resection as well as radiotherapy and chemotherapy to effectively cure lung cancer at an early stage.