First,this paper makes an evaluation of the efficiency of Chinese agricultural research on rural poverty reduction by using the three -stage DEA model.The evaluation results indicate that the overall efficiency of Chinese provincial agri-cultural R&D is not high,and great improvement is possible,meanwhile,the external operation environment and internal management of R&D investment exert an important influence on the improvement of efficiency.Given the obvious spatial correlation demonstrated by the use efficiency of R&D,this paper empirically analyzes the spatial spillover effects of the ag-ri...