In many cases, non-small-cell lung cancer(NSCLC) manifested as synchronous ground-glass nodules(GGNs) and makes complete surgical resection impossible. At the same time, there is no good solution for the remaining GGNs after resection of the main lesion. Theoretically, pre-operative anti-PD-1 therapy is optimal for promoting anti-tumor immune response on the basis of maximum tumor mutational burden (TMB). In addition, neoadjuvant immunotherapy should have long-term anti-tumor effect even after surgery, because tumor recurrence may cause memory cells activation and differentiation. This is a pilot study to analysis the pathological remission rate of neoadjuvant immunotherapy and adverse events related to the treatment
