- In order to assure the necessity of adjuvant chemotherapy on NSCLC patients in phase ⅠB or which kind of patients would benefit from it after the establishment of new staging, a multi-subject group of lung cancer set up a perspective, randomized, open clinical trial to explore whether adjuvant chemotherapy was effective on NSCLC patients in phase ⅠB under new staging policy, and to collect the characteristics of patients who could benefit from the treatment and the better adjuvant drugs after operation.