Abstract: Internetrumors,foodsafety,informationleakageandenvironmentpollutionwerethemajorproblemsduringthesocialdevelopmentincontemporaryChina.Thispaperanalyzedtheoverallcharacteristicsofpublicbadsfromtheperspectiveofpubliceconomics,
andpointedoutthemajorhazardoffourkindsoftypicalpublicbadsinChina.InordertopromotethesustainablesocialdevelopmentinChina,alegalregulatorysystemandapublicpolicysystemshouldbebuilttopreventandcontroltheproblemofpublicbads.
Theresponsibilitiesofgovernment,marketandthethirdsectorshouldbeclearedinordertolimitthedamageinaminimumrangeandsolvethedilemmaofpublicbads.

Key words: public bads , negative externality , public governance policy

摘要： 网络谣言、食品安全事故、信息泄露与环境污染等公害品是困扰当代中国经济社会发展的重大问题。本文从公共经济学视角出发,在厘清公害品的内涵及其总体特征的基础上,对束缚当代中国经济社会发展的公害品进行了效应与危害分析。为了促进中国社会的可持续发展,必须构建规范我国公害品问题的法制保障体系和公共政策体系,明晰政府、市场和第三部门的权责界定,唯有如此,才能将公害品的负外部性限制在最小范围之内,我国社会经济发展才
能真正走出公害品困境。

关键词: 公害品 , 负外部性 , 公共治理政策