Objective To analyze and evaluate retrospectively the efficacy of chemotherapy and radiotherapy in 44 patients with small cell lung cancer(SCLC) confirmed after operation.Methods Fortyfour patients with SCLC:stage Ⅰ,15 cases(34.1%),stage Ⅱ,13 cases(29.6%),stage Ⅲ,12 cases(27.3%) and stageⅣ,4 cases(9.1%) were analyzed.All of them had undergone radical operation except 1 segmentectomy case,and all received chemotherapy for 4-8 cycles withetoposide + cisplatin or carboplatinortaxinol + cisplatin or carboplatinregimen after operation.The patients were followed up for 1,3,5year survival rates.Results The 1,3,5-year survival rates of 44 cases were 84.3%,48.2% and 18.1% respectively.The efficacy of the postoperative treatment with combined chemotherapy and radiotherapy for stageⅠandⅡcases was good,but was not useful for stage Ⅲ and Ⅳ cases.Conclusion Postoperative treatment with combined chemotherapy and radiotherapy had good therapeutic effects for stagesⅠandⅡ SCLC.