Starting the scientific and technological achievements input， factors of the output was summed up as the comprehensive effect of R&D capital, R&D personnel and residual factors, and the production function of scientific and technological achievements is constructed.Element contribution is calculated by using panel data from 2011 to 2020 in China. By analyzing the contribution of different main input factors to the output of scientific and technological achievements, it is expected to provide a reference for China to rationally allocate effective scientific and technological input resources, improve the efficiency of R&D resources utilization and promote the maximum output of scientific and technological achievements.