2009年度克拉克奖得主萨埃兹主要研究公共经济学,在最优税收理论、对收入和财富分布的度量、税收的行为分析和退休金计划的研究上做出了重要的贡献。本文从这四个研究领域对萨埃兹的一系列重要论文做了简短的介绍和评论,梳理了他在各领域的经济思想和突出的学术贡献。最后总结了他重要的研究特点,以作借鉴和学习之用。 Sarah Clark, the 2009 Clark Awards winner, focuses his research on public economics and makes an important contribution to the study of optimal tax theory, the measurement of income and wealth distributions, tax behavior analysis and pension plans. This article makes a brief introduction and comment on a series of important papers by Saez from these four research fields, combing his economic thoughts and prominent academic contributions in various fields. Finally, it summarizes his important research features for reference and study purposes.