叙述了数据包络分析法（DEA）的思想、模型和应用步骤，总结了近20多年来DEA方法的发展、主要应用领域——DEA方法的主要研究成果，并对该领域的进一步研究提出了一些想法和展望。

This paper first presents basic ideas, models and application steps for data envelopment analysis (DEA), then summarizes the development and main application fields of DEA as well as some main research results achieved during the past twenty years in these fields. Finally, the directions for future research are discussed.