经济学中存在着具有自增强机制的动态系统。自增强理论在报酬递增、因果积累、互为因果偏差放大过程、良性循环和恶性循环、门槛效应和非凸性等不同的标签下得以发展。自增强机制的来源主要有:高昂的建立成本和固定成本、学习效应、合作效应和 There is a dynamic system of self-enhancement mechanism in economics. The theory of self-reinforcement developed under the different labels such as increasing returns, accumulation of causation, enlargement of causality deviation, virtuous circle and vicious cycle, threshold effect and nonconvexity. The main sources of self-reinforcing mechanism are: high establishment costs and fixed costs, learning effects, cooperative effects and