主要分析我国高速公路建设的背景和企业投资高速公路项目的国内外发展现状,阐述了项目核准制、科学决策等概念及相关理论。在此基础上,以投资经济学、工程经济学、项目投资理论、决策理论为理论基础,以企业投资高速公路项目的投资决策问题为对象,对企业投资高速公路项目在项目核准制条件下的科学决策方法进行了系统研究。 This paper mainly analyzes the background of highway construction in our country and the development status of highway projects invested by enterprises at home and abroad, and elaborates the concepts of project approval system, scientific decision-making and related theories. On this basis, taking the investment economics, engineering economics, project investment theory and decision theory as the theoretical basis, this paper takes the investment decision-making problem of the highway project invested by enterprises as the object, analyzes the investment conditions of the highway project invested by the enterprise under the project approval system Scientific decision-making methods were systematically studied.