目前,住房问题受到人们的普遍关注,特别是低收入群体的住房问题。本文从转型期以来经济适用房的政策背景及政策执行效果入手,并以南京市为例,重点运用公共选择理论分析政策执行中主体的行为,并提出一些建议,期望政府能更合理地制定政策并有效执行,提高资源配置的效率,促进社会公平与稳定。 At present, the housing issue has been widespread concern, especially for low-income groups housing problems. This article starts with the policy background and policy implementation effect of affordable housing since the transitional period. Taking Nanjing as an example, this paper focuses on the use of public choice theory to analyze the behavior of the main actors in the policy implementation and puts forward some suggestions in the hope that the government can formulate policies more rationally And effective implementation, improve the efficiency of resource allocation, and promote social equity and stability.