If lung nodule resection shows malignant tumor, it is necessary to further determine the patient’s pathological type and clinical stage, and adopt regular review, lymphatic cleansing, radiotherapy and other treatments. Lung nodule resection showing malignant tumor needs to determine the patient’s stage in time. If it is early lung cancer, it only exists in the form of lung nodule, and the surgery has completely resected it, so there is no need for special treatment in the later stage, and regular review is enough to achieve clinical cure; if there is a high risk of recurrence and metastasis, then radiotherapy, chemotherapy and other treatments are needed. If the patient has lymph node metastasis in the middle or late stage, the patient can be operated again to clear the lymph nodes, and then according to the postoperative staging, adjuvant radiotherapy and chemotherapy can be given, and eligible patients can be treated with immunotherapy or targeted therapy.