After the lung nodule is removed, if the pathology is malignant, it is recommended to do further enlarging surgery. After the lung nodule is removed, if the pathology is malignant, it is recommended to do further extended surgery (radical lung cancer surgery), plus local lymph node dissection. Postoperative chemotherapy, biotargeting and radiotherapy should be reasonably applied. For example, if the malignant lung nodule belongs to stage II or above, or if the bronchopulmonary cancer is poorly differentiated, or if there is pleural infiltration, chemotherapy and radiotherapy are needed after surgery. According to the metastatic situation of cancer cells and the sensitivity of lesions to drugs, a drug program should be formulated to give targeted therapy. It is recommended that patients actively follow the doctor’s instructions to cooperate with the treatment, so as to control the tumor to the maximum extent, improve the quality of life and prolong the survival period. Regular checkups are also needed to monitor the efficacy of the treatment and to detect whether the tumor has recurred and metastasized at an early stage.