The possibility of malignant nodules is high. Further improvement of tumor series, such as CEA and CA199, as well as bronchoscopy or nodule puncture biopsy are needed to further clarify the diagnosis. If patients are diagnosed as malignant nodules, they need to consider whether there are indications for surgery, with surgery as the main treatment, and radiotherapy, chemotherapy, target cell drug therapy, immunotherapy, etc. after surgery, without indications for surgery consider the above treatments. In addition to malignant nodules, nodules are divided into benign nodules and nodules caused by pathogenic bacteria, etc. Benign nodules need to be reviewed periodically to observe any dynamic changes, while lung nodules caused by pathogenic bacteria need to be treated accordingly and reviewed after treatment.