大跃进与困难时期的出现是非常复杂的，经济体制问题是重要的因素之一，粮食统购统销制度、农业合作化与工商业的社会主义改造、城乡分割体制等经济体制问题都对大跃进与困难时期有重大影响。 The emergence of the Great Leap Forward and the difficult period is very complicated. The issue of economic system is one of the important factors. The problems of the Great Leap Forward and Difficulties in the economic system such as the system of unified purchase and sale of grain, agricultural cooperation and the socialist transformation of business and industry, The period has a significant impact.