At present,concurrent chemoradiotherapy and prophylactic craniocerebral irradiation are the standard treatment for limited-stage small cell lung cancer.Despite its obvious efficacy,1/3 of patients still have local recurrence.In order to explore how to maximize control of local recurrence and improve survival,this article reviews the current status of radiotherapy for limited-stage small cell lung cancer,and explores its optimal timing,target area,dose,segmentation,and prophylactic craniocerebral irradiation.In addition,emerging therapies of radiotherapy combined with immunotherapy in limited-stage small cell lung cancer are also reviewed.