政府一旦不能满足公共利益,其公共性流失就产生了。新公共管理理论在“如何进行管理”方面,通过“签约外包制”的方式采用政府“掌舵”、市场“划桨”的策略,旨在提高公共物品供给效率、降低政府运行成本,以避免公共性流失。本文运用委托代理理论的原理,通过建立政府与部门企业之间签订的线性契约模型的方法分析得出:由于道德风险的出现,政府“掌舵”、市场“划桨”的策略并不能有效的维护公共利益,政府依然存在公共性流失。对此,本文力图提出矫正公共性流失的政策建议。 Once the government can not meet the public interest, its public loss will come into being. The new public management theory adopts the strategy of “government”, “market” and “paddle” in the way of “how to manage” by means of “contract outsourcing system”, aiming to improve the efficiency of public goods supply, Reduce government operating costs to avoid public loss. By using the principle of principal-agent theory, this paper analyzes the method of linear contract model signed between government and departmental enterprises, and draws the conclusion that due to the emergence of moral hazard, the government’s policy of “steering” and “market” Public interest can not be effectively maintained, and the government still has the loss of public life. In this regard, this article seeks to propose policy recommendations to correct the loss of public sex.