The paper introduces the development history of engineering economics,discusses engineering economics contents from aspects of eco-nomic analysis and evaluation,engineering finance and engineering estimation,explores its impact upon civil engineering practitioners in aspects of technology,economy and society,and finally points out that:engineering economics will strengthen engineering practitioners’economic concept,made the economic management of every stage of engineering project more scientific.%介绍了工程经济学的发展历程，从经济分析与评价、工程财务、工程估价三方面论述了工程经济学的内容，探讨了其在技术、经济、社会方面对土木工程从业者的影响，指出工程经济学有助于工程从业者增强经济观念，使工程项目各阶段的经济管理更加科学。
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