Research progress of total factor productivity and technical efficiency of grain

Total factor productivity and technical efficiency of grain can clearly express the input-output efficiency of production technology and land from different levels，and make the quantitative analysis of grain production efficiency. This paper introduced the definition of total factor productivity and technical efficiency of grain，summarized the influencing factors of total factor productivity，introduced three main methods（ index method，DEA method and SFA method） for measuring total factor productivity，at last reviewed the related research progress.