Many lung nodules are benign lesions and generally do not require special treatment. Regular review of chest CT and follow-up are sufficient. If the lung nodules are diagnosed as malignant tumor by bronchoscopy or CT-guided lung puncture, chemotherapy, radiotherapy and surgical resection should be given in time. Few patients’ lung tumors can disappear completely after chemotherapy, and most patients’ lung tumors can shrink than before, but generally cannot disappear completely. Therefore, patients should clarify the nature of lung nodules in time so that appropriate treatment measures can be given.