Surgery is preferred for stage II invasive lung adenocarcinoma, with adjuvant chemotherapy after surgery. 1. Surgery: Surgery is suitable for invasive lung adenocarcinoma at clinical stage I/II and part of stage III, with lobectomy and mediastinal lymph node dissection as the first choice. 2. Chemotherapy: Stage II invasive lung adenocarcinoma is mainly treated with surgery, and postoperative chemotherapy with platinum-containing two-drug regimen is the multidisciplinary comprehensive treatment. The recurrence rate of stage II invasive lung adenocarcinoma is relatively lower than that of advanced stage, patients should seek medical treatment as early as possible, so as to reduce the probability of recurrence, and the medication should be administered under doctor’s guidance, and should not be used without authorization.