福利经济学主流观点认为公共产品只能由政府供给,市场方式供给公共产品是低效率的。随着经济自由主义和反国家干预思潮在西方的兴起,经济学家开始探索通过市场方式供给公共产品。本文主要围绕有关公共产品的争论、私人提供公共产品的可能性、必要性、实现方式和困境等方面展开论述,并讨论了公共产品市场供给对政府职能的影响。 The mainstream view of welfare economics holds that public goods can only be supplied by the government and that it is inefficient to supply public goods by way of markets. With the rise of economic liberalism and anti-state interference in the West, economists began to explore the supply of public goods through markets. This article focuses on the controversy about public goods, the possibility, necessity, implementation and difficulties of privately providing public goods, and discusses the impact of the supply of public goods on government functions.