产业结构是指国民经济整体与各个产业部门之间、各个部门相互之间以及内部各个组成部分之间的相互联系和对比关系。产业结构合理与否对于整个经济的发展具有重要意义。要制定符合我国国情的产业政策，首先必须有科学的、可在实践中应用的产业结构划分法。对此，我国是在经济发展实践中逐步加深认识的。新中国成立之初，我国在理论上应用的是两大部类划分法，按照产品的经济用途把生产生产资料 The industrial structure refers to the interrelation and contrast between the national economy as a whole and various industrial sectors as well as between the various departments and between the various components of the industry. Whether the industrial structure is reasonable or not is of great significance to the development of the entire economy. To formulate an industrial policy in line with China’s national conditions, we must first of all have a scientific and practical division of industrial structure. In response, our country has gradually deepened our understanding in the economic development. At the beginning of the founding of New China, China applied the theory in two divisions of division. According to the economic use of the product, the means of production