摘要：This article expounds the economic characteristics of circular agricultural technology. Since the circular agricultural technology has characteristics and externality of public goods, the government participation is necessary in building the technology system of circular agriculture, in order to avoid "free rider" behavior in the consumption of public goods and internalize externality. We analyze the orientation of government's role in building the technology system of circular agriculture: the government is the leader, designer, organizer and regulator in building the technology system of circular agriculture; the government orientates the four roles precisely in building the technology system of circular agriculture, to ensure that they do not cross the line, but be indispensable all the while.
关键词：Circular agriculture;Establishment of technology system;Orientation of government's role
