Abstract: This paper observed two groups of patient with stage N lung cancer,one group received combined chemotherapy and radiotherapy(44 cases)and the other recerived group conventional chemotherapy(25%cases).The response rate in the combined was 34.1%,the median survival time was 11 months,and the was 12%and 4.5months.The report showed that using reasonablecondition other group and effective adjuvant for stage N lung cancer can improve the patient's and survival.