公共经济学是从经济学的角度来解释、分析和规范政府的职能和作用的科学。运用公共经济学规范政府的经济行为是时代的要求,是建设市场经济的要求。在市场经济条件下,政府通过财政收支、经济政策和公营企事业来提供产品和干预市场。公共物品是公共经济学的核心理论。信息从公共产品的基本特征上看也是一种公共产品,因为增加一个人的消费不会减少他人的消费量。而私人市场所提供的信息往往既不完整也不充分, Public economics is a science that explains, analyzes and regulates the functions and functions of the government from an economic point of view. The use of public economics to regulate the economic behavior of the government is a requirement of the times and a requirement of building a market economy. Under the conditions of a market economy, the government provides products and intervenes markets through fiscal revenue and expenditure, economic policies and public enterprises. Public goods is the core theory of public economics. Information is also a public good in terms of the basic characteristics of public goods, since increasing one’s consumption does not reduce others’ consumption. The information provided by the private market is often neither complete nor sufficient,