本文采用马克思关于经济周期的制度分析方法解析十九大报告有关供给侧结构性改革任务的深层含义，结合近年来中国经济运行的实际情况，考察“三去一降一补”内在相互联系以及供给侧结构性改革各项任务与经济制度和政策的一些重要关系。借鉴国际经验，本文认为，要深入推进供给侧结构性改革，应当坚持三个原则：一是摒弃过去那种常见的“头痛医头，脚痛医脚”的做法；二是坚持市场化导向原则，不以行政手段作为主推力；三是总结经验教训，政府部门应当更多地反思自己的政策行为。

Using Marx's institutional analysis of economic cycle, this paper aims to analyze the in-depth meaning of the supply-side structural reform task in the 19th CPC National Congress Report. By observing China's economic operation in recent years, it explores the interrelationships between and among capacity reduction, destocking, deleveraging, cost reduction and improving underdeveloped areas, and some important relationships between the tasks of supply-side structural reform and economic system and policies. Drawing on international experience, this paper argues that three principles should be followed in order to deepen the supply-side structural reform. First, the usual the ad hoc approaches should be abandoned; second, market instead of administrative means should be the main driving force; third, lessons should be drawn and government departments should reflect more on their own policy actions.