Abstract: This paper obtained the Bayesian Nash equilibium bidding strategy for first price sealed bid auctions and proeurments in civil engineering for some frequently used utility functions such as constant relative risk and constant absolute risk and logarithmic utility．

Key words: first price sealed bid auctions, proeurment in civil engineering, bidding strategy, Bayesian Nash equilibium, constant absolute risk, constant relative risk

摘要： 笔者在文中给出了独立私人价值下风险中性、常相对风险和常绝对风险(包括风险厌恶，风险中性和风险追 求)及对数效用函数的投标人在第一价格密封拍卖和最低价格中标的采购招标中的均衡投标策略．

关键词: 第一价格密封拍卖, 土木工程招投标, 投标策略, 贝叶斯纳什均衡, 常相对风险, 常绝对风险