【摘要】 过去几十年，发展中国家的非正规经济作为经济学研究的前沿问题，一直备受经济学家和政策制定者关注。为更加全面、深刻地展现非正规经济理论体系与研究进展，本文在系统梳理相关文献的基础上，首先阐释了非正规经济的定义与测度方式，继而从非正规部门单位和非正规就业市场两个角度切入，系统性地评述非正规经济的特征、影响因素及其所产生的经济后果。针对最具争议性的非正规经济分化驱动力，现有研究主要存在两大理论流派:“二元分离主义”派和“结构关联主义”派。前者认为非正规部门的形成源于“生产力鸿沟”，而后者认为非正规化选择是行为主体基于比较优势的主动理性决策。最后，本文总结了现有研究领域的不足，并展望了未来可拓展的研究方向，以期为进一步探索非正规经济提供有益借鉴。更多还原

【Abstract】 Over the past few decades,the informal economy in developing countries,as a frontier issue in economic research,has been of great concern to economists and policymakers. To present the theoretical system and research progress of the informal economy more comprehensively and profoundly,this paper,based on a systematic review of relevant literature,first explains the definition and measurement methods of the informal economy. It then systematically reviews the characteristics,influencing factors,and economic consequences of the informal economy from two perspectives:the economic units of the informal sector and the informal employment market.Regarding the most controversial driving forces for the differentiation of the informal economy,the existing research mainly falls into two theoretical schools: the “Dualist school” and the “Structuralist school”. The former holds that the formation of the informal sector stems from a “productivity gap”,while the latter views informalization as an active, rational decision made by economic agents based on comparative advantage. Finally,this paper summarizes the deficiencies in the existing research field and discusses potential future research directions, aiming to provide useful references for further exploration of the informal economy.更多还原