Some of the links are irrational and imperfective , and the exhortative mechanism does n ' t do much . the article is divided into two parts : the first part is to introduce the evolution , formation and measure of the human capital ' s theory 本文内容分为两部分,第一部分介绍人力资本理论的演变发展及人力资本的形成及测度,给出人力资本的基本特征,并用数学模型说明人力资本投资的临界点在于边际收入等于边际成本。