由于公共物品对社会及其成员的发展具有不可替代的作用,而法制社会要求对公共物品的供给进行法律规制,但每一法律部门只调整一部分社会关系。法律体系的基本结构是私法、公法和社会法。公共物品是社会公共利益的载体,故对公共物品供给进行规制的法律制度,既不能是追求私人利益的私法,也不能是追求国家利益的公法,而必须是带有社会法性质的经济法。故应完善经济法律制度以促进公共物品的有效供给。 Because public goods have an irreplaceable effect on the development of society and its members, and the legal system requires the legal regulation of the supply of public goods, each legal department adjusts only a part of social relations. The basic structure of the legal system is private law, public law and social law. Public goods are the carriers of social public interests. Therefore, the legal system regulating the supply of public goods can not be the private law that pursues private interests, nor the public law that pursues national interests, but must be an economic law with the nature of social law. Therefore, the economic legal system should be improved to promote the effective supply of public goods.